So this was perfect to let them set a whole year, they were perfectly cured by that time.
Cut out the designs you want to use and Mod Podge the place on the egg where you want to place your design and then Mod Podge over the design on the egg carefully. I find it is about impossible to do more than a couple designs at a time on an egg. Place the egg with the backside that hasn't been Mod Podged (or the Mod Podge side that has dried) on a rack to dry. When the egg has been completely covered with your napkin designs let dry completely before letting them touch each other. Enjoy!
When a man is introduced to a lady he does not offer his hand unless she makes the move first.