Don't you hate it when you're so close to finishing a project and you screw it up at the last second? Here's why you shouldn't pick up a cookie immediately after you decorate it:
Doh! My finger slipped and went right through the icing.
Royal icing takes at least 8 hours to harden, and I usually let them sit for 24 hours before I package them up. From now on, I will be leaving my decorated cookies alone for several hours before I try to move them!