how do i make a frosting to look like a cheetah pattern?

Answer 1

Use 2 different colors. An orange background with black dots. Piece of cake.

Answer 2

Do you mean how to you decorate the spots?

Ice the cake with a light color frosting first. Then use food coloring to make a dark black or brown frosting. Use a pastry tube or plastic bag with a small opening cut on the diagonal to decorate the spots.