Once you’ve decided on a theme, have gathered the items that fit within those parameters, and have narrowed down your choices to the best three to five items (depending on the size of your frame, of course), you’re ready for the fun part—actually creating your shadow box. Before gluing anything into place, set out all of your mementos and play around with the layout. Try layering the elements, so that the shadow box has more depth and intrigue. Some overlap will ensure the shadow box doesn’t look empty, too. Once you’re satisfied with the scene, use glue, pins, tacks, or even brooches to secure everything to the frame’s backing.