Working on a "Fiona" Birthday cake for a little girl, wants fiona head, (Almost Life Size) on top of cake, any ideas on how to build and decorate, I was thinking either a styrofoam head or using rice krispy treats for head then decorate, any suggestions

Hi,
I made a 3D spiderman head out of RKT and I used the instructions from this great website to make a 3D spiderman cake. My daughter wants a 3D Cinderella cake and I'm going to use these instructions as a basis. I'm not sure how to do the details so I'm curious to see what everyone else suggests.

http://frostingfun.blogspot.com/

I think rice krispy treats because it will be lighter, unless you can use styrofoam. Then use modeling chocolate for the features?

http://sugarsweetcakesandtreats.blogspot.com/2010/11/toy-story-cake-and-cupcakes.html
http://sugarsweetcakesandtreats.blogspot.com/2010/08/barney-and-friends-cake.html

Unless you use the cake as part of the head.

http://sugarsweetcakesandtreats.blogspot.com/2010/11/character-head-cakes.html

I think rice krispy treats because it will be lighter, unless you can use styrofoam. Then use modeling chocolate for the features?

http://sugarsweetcakesandtreats.blogspot.com/2010/11/toy-story-cake-and-cupcakes.html
http://sugarsweetcakesandtreats.blogspot.com/2010/08/barney-and-friends-cake.html

Unless you use the cake as part of the head.

http://sugarsweetcakesandtreats.blogspot.com/2010/11/character-head-cakes.html