DIY wall picture collage. Super simple and less expensive alternative to framing every picture. You'll need: *Pictures you want to use *2 20x30 foam core boards *Foam Brush *Mod Podge *Double sided tape 1. Draw out a plan and lightly outline picture placing on foam board. 2. Cut pictures into 4 inch squares and tape down. 3. Apply even coat of Mod Podge and let dry.