I am making a Batman cake for my son's birthday party and I want to make a cityscape around the bottom layer of 2D buildings (similar to many of the batman cakes in the galleries).

Has anyone made flat gumpaste items like this? How thin should I roll the gumpaste? How can i get it to dry curved and not fall over? I am guessing i should mold it around the cake pan but what will keep it from falling over as it dries? How would I affix it to the fondant covered cake?

Thanks everyone!
Ally

Do they need to stick out above the top of the cake? Because I would probably do it just in fondant and stick them right on without drying first?

I agree ... unless you're wanting them to stand up on their own above the cake tier, I would just do them in fondant.

Hmmm...I had initially imagined that they would stick up past the top of the 1st layer, but maybe they don't have to. Putting a piece of cut fondant on top of fondant sounds much easier!