1) Find a good fingerprint: Take a picture of a dusted one, open it in photoshop, raise the contrast, and save it. (Or you could just find a picture of one on the internet)
2) Print the picture of the fingerprint onto a transparency sheet (the clear plastic paper used with overhead projectors) with a laser printer. The toner in the ink will make small indentations in the transparency sheet. Let the ink dry without smudging.
3) Cover the top of the fingerpring with wood glue. Leave it to sit overnight.
4) Put theatrical glue on the back of the dry wood glue, and attach to the desired finger.
5) Lift your finger and admire your new fingerprint.
