Hi!
I'm making a 3D T-Rex cake for my son's birthday. I have the PVC structure built & am covering it today with RKT(it's for Saturday).
I've learned lots of great tips and info from all over the web, but I can't figure out how I should build up the belly of the dino(the whole gravity problem).
Also, What can I use to shape the head? I want the mouth to be opened...like the T-Rex is roaring.

The cake will be the back( top) of the dino, the rest will be RKT & candy clay.

If anyone can help me out, I'd greatly appreciate it! Thanks!

look at
http://cakecentral.com/cake-decorating-ftopict-579695.html

Make sure your armature is correct. There should be no real gravity issue.

Especially look at the post with this picture.