DIY Regular Deep Frame to Shadowbox Tutorial from EPBOT here. I’ve taken lots of classes in marbleizing, cake decorating, book binding etc… but the class that saved me the MOST MONEY was framing and mat cutting. This is a really good tutorial from recommending archival acid free foam core (thank you! Regular foam core WILL turn yellow) and using glazier points - easy and cheap. You can also add a mat (a good idea if you are NOT using a shadow box because it acts as a buffer between the glass and artwork/photo) and build up the foam core in stacked little squares under the mat to get this effect.