Start by drawing the head. Make two lines that come together at a curve and have a few bumps for the sides of the head. Add a tiny oval with a line on top for the eye.
To draw the body and tail of the Gila Monster, continue from the head and make a shape almost like a crescent moon, except more uneven and bumpier.
Draw the front leg up from the body and facing to the right. Make sure to add five toes to the foot of the Gila Monster.
Draw the other front leg so that the long toes are blocked by the rest of the leg and draw a curve looping back as the end of the leg. Imagine that you are looking right down at it, and can only see a few tiny bumps for the toes.
Draw the other hind leg like the other except hide a little of the foot and a toe with the leg itself.