Draw a large oval for the body
Draw a smaller oval overlapping the front for the head
Add two small circles on top of the head for the ears
Draw two short rounded shapes on the front of the head for the nostrils
Add two small eyes above the nostrils
Draw a wide curved line for the mouth
Sketch four short thick legs under the body
Add rounded feet at the bottom of each leg
Draw a short tail at the back
Outline the hippo with smooth curves
Erase extra guide lines
Add simple details like toes and wrinkles