How far in advance can I make fondant decorations? It's for my sons birthday cake. And how would I store them? His birthday is in 2 weeks.
Depending on what you are making I usually do my fondant decorations about a week in advance and I let dry uncovered on wax paper. If you need them to wrap around the cake or have any sort of flexibility I make those only 1 -2 days in advance and store in a ziploc bag until I"m ready to apply them.
You can make them at anytime in advance.
Gumpaste and sugarpaste items store indefinitely in a cardboard box in a cool spot in a pantry or store-cupboard.. Do not wrap in plastic or store in a air-tight box.
If you are making flat cutout decorations, you can make them weeks in advance. Place them on wax paper in a single layer. You can stack the wax paper covered with a single layer of fondant on top of each other. Place them in a plastic bag and freeze. When you are ready to use them, take them out of the freezer, unstack them and apply them to the cake. I just use a bit of shortening applied to the back of the cutout to attach it to a cake. You are able to easily reposition it if you make a mistake.
Why are you freezing them ?