Drawing Leonardo from Ninja Turtles in my Crusty Goobers Style | How to Draw with Kevin Coulston

by | Jan 6, 2026 | crusty goobers, Drawing with Kevin Coulston, Fan Art, TMNT

Drawing Leonardo from Ninja Turtles in My Crusty Goobers Style

In this post, I’m sharing a timelapse video where I draw Leonardo from the 1987 animated Teenage Mutant Ninja Turtles series in my Crusty Goobers style. This video is less about planning and more about jumping right in. I don’t start with a sketch, I don’t erase, and I don’t try to make things perfect. I grab a pen, put it on paper, and see where it goes.

That’s exactly how the Crusty Goobers characters are created in my books, and it’s the same approach you’ll see in this video. Drawing Leonardo from Ninja Turtles this way is all about letting the drawing happen naturally and accepting whatever comes out on the page.

Learn to Draw Crusty Goobers


Drawing Along Without Overthinking It

One of the reasons I like making videos like this is because they encourage people to draw along without worrying too much. Watching Drawing Leonardo from Ninja Turtles happen with no sketch underneath shows that you don’t need to plan everything out ahead of time.

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If you’re drawing along, you can:

  • Start straight with pen
  • Let lines overlap or get messy
  • Adjust as you go
  • Embrace happy accidents
  • Color freely with markers or whatever you have

This approach takes the pressure off. You’re not trying to “get it right.” You’re just drawing.

That mindset is especially helpful for kids. When they see that even an adult artist doesn’t erase and doesn’t stress over mistakes, it makes drawing feel more approachable.

Crusty Goobers Activity Books


Why This Approach Works So Well for Crusty Goobers

The Crusty Goobers characters are meant to feel imperfect, weird, and full of personality. Starting with pen helps keep that energy alive. When you don’t sketch first, you’re forced to commit to lines and adapt as you go.

That’s exactly what’s happening while Drawing Leonardo from Ninja Turtles in this video. The character develops naturally. Some lines end up thicker. Some shapes get pushed around. Instead of fighting that, I lean into it.

That same process is baked into the Crusty Goobers art books. The characters aren’t meant to be polished or symmetrical. They’re meant to feel alive and a little unpredictable.


Using a Familiar Character as a Fun Drawing Exercise

Leonardo doesn’t appear in my Crusty Goobers books, but Drawing Leonardo from Ninja Turtles in this style is a fun way to show how the process works. Using a familiar character makes it easier to jump in without thinking too much.

You already know who the character is, so you can focus on drawing instead of planning. That makes it a great warm-up exercise before creating original characters.

Once you draw something like Leonardo this way, it becomes easier to apply the same loose approach to your own characters — which is exactly what the Crusty Goobers books encourage.

Get The Books


Markers, Color, and Letting Go

After the pen work is finished, I color the drawing with markers. Marker coloring fits perfectly with this style because it’s fast and unforgiving — just like drawing in pen. Once the color goes down, it’s there.

That’s a good thing.

Coloring this way keeps the drawing playful. You’re not worrying about shading or realism. You’re just adding color to support the character’s personality. Watching Drawing Leonardo from Ninja Turtles go from plain linework to a fully colored character helps show how much life color can add, even when applied simply.

Kids especially love this part. Markers feel bold and fun, and there’s no pressure to stay inside the lines perfectly.

The Markers Used in my Video


How This Video Connects to the Crusty Goobers Books

The Crusty Goobers books are built around this same idea: draw first, think less, and keep moving forward. The characters inside the books are original, but they’re all created with this pen-first, no-erasing mindset.

If you enjoy watching Drawing Leonardo from Ninja Turtles unfold this way, you’ll recognize the same energy when flipping through the Crusty Goobers pages. The books encourage kids to:

  • Draw without fear of mistakes
  • Commit to lines
  • Adapt when things go “wrong”
  • Have fun with weird results

That freedom is often what helps kids fall in love with drawing in the first place.


About the Timelapse Drawing Video

In this video, you’re watching Drawing Leonardo from Ninja Turtles from start to finish, in real time, sped up into a timelapse. There’s no rough sketch underneath and no undo button. Every line you see is drawn directly with pen. If something comes out a little crooked or unexpected, I don’t erase it — I work with it.

Watch Video and Follow Along Here:

That’s a big part of the Crusty Goobers style. Mistakes aren’t mistakes. They’re just part of the drawing. Sometimes a line goes a direction I didn’t expect, and instead of fixing it, I let the character change. That’s often how the most interesting details show up.

After the linework is finished, I color the character using markers. Coloring with markers keeps things loose and fun. There’s no blending, no perfection, just bold color choices that bring the character to life.

Step-by-Step Drawing Books


A Creative Kind of Screen Time

This kind of video works well as an active form of screen time. Instead of just watching, kids are encouraged to grab paper and draw along. Drawing Leonardo from Ninja Turtles becomes a prompt to create, not just consume.

Parents often tell me they like pairing videos like this with the books — watch a drawing happen, then try your own version, then keep drawing offline.

The Sketchbook Used in my Video


Final Thoughts

This timelapse video of Drawing Leonardo from Ninja Turtles is meant to show that drawing doesn’t have to start with a sketch or end perfectly. Sometimes the best drawings come from jumping straight in with a pen, rolling with mistakes, and seeing where things land.

If that approach sounds fun to you or your kids, the Crusty Goobers art books are built around that exact mindset. They’re about drawing freely, experimenting, and enjoying the process without overthinking it.

Thanks for drawing along with me.

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Meet The Author & Artist

Kevin Coulston is a children’s book author, illustrator, cartoonist, and member of the National Cartoonists Society. Over the course of his career, he has published more than 100 books, including instructional drawing books, activity books, comics, graphic novels, and children’s picture books.

His popular How to Draw, Trace Then Color, and Draw by Grid series have helped thousands of aspiring young artists learn to draw through simple, approachable lessons featuring hundreds of Kevin’s original cartoon characters.

Kevin is also the creator of the comic series Dylan McVillain and The Adventures of a 4th Grade Space Captain, as well as the children’s picture book series Alexis and the T-Rexes. In addition to his publishing work, Kevin created, wrote, illustrated, and animated the web series Bad Jokes with Ugly Folks, starring legendary voice actors Rob Paulsen and Tara Strong.

Kevin believes anyone can learn to draw—and that learning is a lot more fun when the characters you’re drawing are weird, silly, and just a little ridiculous.

What Our Customers Are Saying

“The author really does a great job demonstrating how easy (and rewarding!) it can be to draw seemingly ordinary things you (and your little ones!) may feel too intimidated to try drawing without the step-by-step guide! Putting already-known shapes together and making something new and original is a fantastic way to learn! And recognizing that you can add your own twists and personality to your drawings makes all the difference. I think it’s a fun, original approach to building confidence for a lifelong hobby. I have the ebook copy, and can only imagine how great a physical copy would be!”

– Daenarah [Amazon Review]

“There are several of these fun books by this author. My kids and I have had a lot of fun with these. It’s a great activity to do as a family and see how they all turn out. Almost like a sip and paint but more of a juice box and draw.”

– Allison B. [Amazon Review]

My kids can’t wait to start drawing these monsters in their illustrations! The many different moods of the monsters appeal to their different personalities. We love the many options, styles, and opportunities to expand upon the characters. Recommended for all ages!

– Kasey [Amazon Review]

“Kevin has put out many books on drawing and animation, and has such a great feel for HOW to explain the process. His art is so expressive and kid-friendly, but his real strength is in his ability to really explain and show how it’s done, making it accessible to kids and adults. I’m a firm believer that not everyone who “can do” can teach, but Kevin does both beautifully! Pick this up and watch kids have a blast making robots of all sorts, while learning great fundamental art skills at the same time!”

– Tom R. [Amazon Review]

“My 5yo LOVES this book! The drawings are cute and the instructions are easy to follow along with. She gets a kick out of drawing muffin monsters and ketchup monsters and it actually keeps her pretty focused for long periods of time.”

– Monica [Amazon Review]

“This is a fantastic book for kids who love art, cartoons, comic books, or just having fun! There are a lot of characters to choose from, and really easy step-by-step instructions to follow. You child will have a blast drawing these fun, silly characters! And just in time for Easter baskets!”

– Bestmomever [Amazon Review]

“This is a very good book for kids that want to learn to draw, my sons love it and Kevin does a great job of making drawing fun and not intimidating. Highly recommended for the long summer hours!”

– David D. [Amazon Review]

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