I used two white boxed cake mixes for this Cartman Birthday Cake and added in almond extract to give it a much bolder flavor. Baked them in a 9 x 13 pan. When they were cooled I cut the cakes in half and filled them with homemade buttercream icing and put the back together.
Then using a picture of Cartman I had found online I cut out the outline for the head, body, hands, and feet. I then outlined the cake using the colors of icing I would need black, brown, red, yellow, blue, white and flesh colored. Then added the details such as the outline of the eyes , mouth, buttons and cap with black. Then using tip #16 I star tipped the icing onto the cake starting with the darkest first then of course finishing with the lightest color.
Finished the cake up with adding the Happy Birthday Dedrick.