Here are the steps I took to prepare it for framing and display...
#1- Put the puzzle together (obviously). I suggest using a puzzle mat that can be rolled up (like the blue one below) or a large piece of plywood. This way, your puzzle can be moved if necessary. This particular jigsaw puzzle was 1000 pieces, so it took a little time and a lot of persuasion on my part to get my family members to help.
#2- When finished, gently slide wax paper under the entire puzzle.
#3- Be sure to overlap the wax paper and leave a border around the outside edges. This will prevent the Modge Podge from dripping onto your mat or other surface.
#4- Modge Podge the entire puzzle top.
Be sure to cover each and every piece, then allow puzzle to dry completely. Repeat the process one or two more times.
#5- When the final coat on top has dried completely, flip the puzzle over and Modge Podge the entire back. (One coat should be enough.) Allow to dry.
#6- Frame your puzzle. I took this one to Michaels and had it custom framed.
My husband and I are pretty happy about the way it turned out. :)