-If using butter, do not let dough sit in refrigerator for much longer than an hour, or it will become too hard and won’t be able to be rolled out.If using margarine, dough can stay in longer, even overnight.
-If cookies are pulled out of the oven before the bottoms brown slightly, they will be too soft and too fragile to decorate. Adjust cooking times accordingly to ensure bottoms are slightly golden brown before removing.