HOW TO: Building a Gallery Wall. 1. Choose larger pieces as anchors. 2. Choose a color scheme. 3. Play with scale - vary the size and orientation of the art. 4. Keep at least 1.5" - 3" between each piece. 5. Allow at least 6" between the couch and the first frame. 6. Use 2 to 3 styles of frames. 7. Use different mediums of art - photography, art prints, gift wrap, decorative objects, etc.