Draw a large oval for the body
Add a smaller oval for the head
Connect the head to the body with a thick neck
Sketch a short tail extending from the body
Draw four sturdy legs beneath the body
Add rounded feet at the bottom of each leg
Draw the frill behind the head as a large curved shield shape
Add three horns on the face, one on the nose and two above the eyes
Outline the eye and mouth on the head
Refine the body shape and smooth the lines
Add skin folds and simple texture details
Erase extra guide lines
Darken the final outline
Color the triceratops as desired