These are so addictive! I've made some featuring pictures I've taken, or some random images, but many are from a 1959 children's encyclopedia. I use something called "Paper Glaze" to seal some, and other just some mod podge glitter details. I don't have any ventilation in my studio space, so I've avoided using resin. I cut a small piece of magnetic tape (the doublestick kind that comes in a roll) for the backs. They'll hold a bit of paper, but mostly they're just decoration!