Please help! How do you stop fondant from cracking on a cake? The last cake I made I had filled the cake and refrigerated it for 24hr before frosting. I frosted with buttercream and covered with fondant. The fondant on one side started to sag (I'm guessing to much buttercream underneath). While airbrushing and moving the cake I started to get cracks. I always roll fondant on a powdered sugar surface and normally don't have problems there. Once I have it on the cake is...