Hi! I’m making some small resin projects with photos. I’m sealing the photo with modge podge on the fronts, backs and edges of the photos and sticking them to my blank. I let them sit overnight. Some of them are turning out fine. But a few of them, are having issues. I’m using UV resin with a small about of glitter. When I apply the resin on top of the photo, it looks great. Once I UV it, it starts to show random blobs that looks like scratches. It’s not over the entire image but it looks terrible. The scratches that appear are on the bottom side, not the top (so they can’t be felt). What am I doing wrong?