Step 6: Starting at the top of the dinosaur's head, draw a series of short, curved lines for the bony frill behind the head. The triceratops frill is basically a big half-circle that's made up of short, curved lines. Pay attention to how big and wide the frill is. The bottom should curve up a bit toward the eye.
Step 7: Draw three small lines spread out within the frill for extra detail on the bony texture. To the right of the brow, draw a small, triangular shape for the first horn. Curve the sides and corners. To the right of the triceratops' head, draw another small, triangular shape for the horn on the other side.
Step 8: Under the head, draw a short line that curves to the left for the front part of the dinosaur's body. To the left of the chest, draw two short, vertical lines for the first front leg. Make the top of the leg wider than the bottom. Close off the shape at the bottom with a short line.
Step 9: To the left of the front leg, draw a curved, horizontal line for the bottom of the triceratops' body. To the left, draw two very long, sloping, vertical lines for the hind leg. This leg should be very wide at the top. The bottom of the leg should be narrow. Close off the shape at the bottom with a short line.
Step 10: To the right of the hind leg, draw a small, rectangular shape for the hind leg on the other side of the dinosaur's body. To the right of the front leg, draw an angled line that's similar to a backward letter L for the triceratops' front leg on the other side.