I saw this post a while back and loved this cake: http://www.craftster.org/forum/index.php?topic=292046.0
. This was my inspiration, though mine was poorly done, and doesn't do justice to my inspiration.
I loved the bite marks, and the word twilight was done with melted chocolate written on wax paper, dried, and then adhered to the cake.
The insides were supposed to be a checkerboard white/ red velvet cake, but the red velvet expanded too much while cooking and the "checkerboard" was lost. I chalked this up to "you live and you learn". Luckily, it tasted fine and the girls didn't care one whit about my inability to use fodant.