I usually just let the icing harden a lil before I attach my fondant pieces to the cake, but sometimes the pieces on the sides start to slide Is there an easy fix for this??? I have to make a cake for this Saturday & its supposed to be warm. I dont want the icing to start to melt & the pieces to all come off of the cake!

How heavy are the decorations? This cake was frosted with whipped icing and a butter cream border. I pipe a circle on the back of my decorations this creates a little suction as it is placed on the cake. If the decorations are heavy like flowers I attach a toothpick with royal frosting and let it dry before attaching the decorations to my cakes. Hope this helps. http://cakecentral.com/gallery/1686079

If you are using a whipping cream based frosting, you cannot use fondant decorations. The fondant absorbs the moisture from the whipping cream which turns it to slime. That is why your decorations have probably slid off.

Thanks Sweettreat! The decorations are fairly light so I will try that.
BTW... the Quinceanera cake is BEAUTIFUL!!!

The cake is decorated in non dairy whipped icing. It has fondant stars and and a fondant lace border. I didn't have any problems with the fondant melting and this isn't the first time I have placed fondant on non dairy icing. As long as you are not using whipped cream your decorations will be fine.