Share a little about the materials, processes, and techniques used to create this cake Used one bratz barbie doll, 2 boxes of cake mix, several cans of frosting and a dome shaped cake pan. What are you most proud of? Was glad she turned out so beautiful. Especially considering the color choices. What advice would you give someone starting this project? Take your time. make sure your layers are good before you place the doll into the cake and you can use a knife to make an incission into the cake to make it easy for her to slide in.