Hi I am new to CC and I need some info on Icing sheets. I am doing a wedding cake and I have butter cream icing on the cake and I am going to be using the icing sheets. This is only the second time I have used them. How far in advance can you put them on the cake without the colors bleeding? And once you put them on the cake can you put the cake back in the refrigerator? I would appreciate any help anyone can give me. Thanks in advance.