well this was actually a cake batter creation (not technically a cake). It's supposed to be Pinkie covered in cake batter, but....if you wanted to what you could do is basically what I did but bake it...should come out fine. What I did here was make a thick cake batter (addition of a pudding mix not only makes it thinker but makes an awesome cake!, anyways) and I used a large piping bag (you could use a gallon Ziplock bag instead) with a large circle tip. Take a sheet of wax paper, draw a design on it, flip the wax paper over (so that you don't get marker on your cake, pipe the cake to fit the stencil, bake according to the recipe, let cool, frost, win! For finer details you could switch to a smaller tip and I can send you a frosting recipe if you'd like one. Cheers mate!