because it looks like its raised up, i would do the bottom with rice crispies, but the look of it i think it would be possible to do the whole cake with cake.
It is a neat cake.
Sorry I can't offer you any advice but I suggest you ask Doug. He will definitely know how the cake was made.
Someone on CC just did that same cake (or a similar version of it) about a week or so ago. I remember seeing it on the bottom row of pix on the home page. You might search the galleries and PM that person. Sorry I cannot remember who it was though.
I would guess that the bottom part is rice krispies and the top is cake as you had said. to do the nose and other raised pieces, like the eyes, build those areas up by putting pieces of fonant in the shape that you're looking for onto the cake BEFORE you put your base of white fondant on the cake.
shhh.....supposed to be doing my homework at the 2-week workshop I'm at....but...well....CC IS addicting.
sorry no access to publisher to
base -- 9x13 sheet
front part of helmet that rises up to main section -- half a wonder mold.
main helmet area -- rounds topped by sports ball or soccer ball
then carve the heck out of it.
actually I really lucked out and wrote to the gal who posted it on flickr..and she sent me full instructions!!! I am forever grateful to this wonderfully talented lady!
(the bottom and nose is rice krispies) THis cake isnt due till Sept 6th, so will post a photo when I am done!