Foods freeze at 0 degrees. Make sure your freezer's thermostat is properly set at constant zero or lower.
Don't overload your freezer or add large quantities of unfrozen food at once. Doing so causes the food to freeze too slowly and quality will be lost.
Always allow baked goods to cool completely before wrapping securely in plastic wrap and then a re-sealable bag or foil before freezing.
Label frozen foods with the name and date it was frozen and any finishing instructions.
Thaw baked goods still wrapped on the counter or in the refrigerator.
Make sure they are completely thawed and at room temperature before icing or glazing.
Most unfrosted cakes freeze beautifully. Make sure they are completely cool before double-wrapping, first in plastic wrap and then in foil or a large re-sealable freezer bag. Defrost, still wrapped, at room temperature.