I need help carving a head cake. This will be my first time doing it. I want to make the head of my husband's favorite game character for his birthday and I'm not sure of how to do it or what size rounds I should use. The cake is just for me and him so it doesn't need to be really big. Help please!!!!!

There is a tutorial on instructables.com on how to carve a zombie cake. The cake was carved to resemble a friend. Might give you some idea on how to do it.