Start with a large oval for the head
Add a smaller oval or rounded shape for the body
Draw the neck and shoulder connection
Sketch the arms and legs with simple tube shapes
Add hands and feet with rounded fingers and toes
Draw the shell on the back as a large rounded dome
Add the chest plate and belt across the torso
Draw the mask over the eyes
Add the eye shapes inside the mask
Sketch the mouth and nose
Add the bandana tails flowing behind the head
Draw the elbow and knee pads
Add the turtle skin texture with small lines and bumps
Refine the outline of the head, body, and limbs
Ink the final lines cleanly
Erase the sketch lines
Color the skin green
Color the shell brown or dark green
Color the mask in the character’s signature color
Add shading and highlights if desired