This is probably going to be one of those "I wish I hadn't asked that" type of question but here goes. I have seen puzzle piece put together to form about a 4" X 5" base for collages. There is a picture that has been decoupaged to the pieces but they still show the indentations of the puzzle. The "new" picture might be an old photograph, etc. How is that done?
Maybe traced on picture......cut out and glued on?