Hi there. I am looking for some advice on how to avoid the sticky mess that my wallet ended up in. I made a duct tape wallet and used some smaller pieces of duct tape to make a picture on the outside of the wallet. After it living in my back pocket for a few months, a gummy residue started to form around the cut out pieces. Any idea how to avoid this? I want to make a wallet as a gift but don't want the recipient to end up with a sticky mess.