I don't remember what I was looking for or who's page I found this blog on, but I thought it was awesome. I can't wait to find a really nice thick piece of cardboard and try this technique out myself. I always wanted little question marked boxes above my head (even if I can't actually headbutt them and get something that makes me spew fireballs...) LINK.
After two weeks of brainstorming and three days actually making the cake, university student, Su-Yin, baked this amazing Mario cake for a friend's birthday. 
