Mod Podge Rocks
Clear phone case Mod Podge Gloss Glitter Paint brush
Cover your work surface with newspaper or similar. Cover the outside portion of the phone case, including the sides, with a layer of Mod Podge using the paint brush.
Immediately pour glitter over the glued area and set down for 2 minutes. Then tip over the case and allow excess glitter to fall back onto the parchment.
Repeat! Add glue, then glitter, then allow to sit for 2 minutes. This ensures the glitter entirely covers the case.