No glass needed, just use some strong cardboard and a scrap book page to get started, probably get two frames out of that for a background. Hope that helped more...
Paints: crackling, sponge, spackling(toothbrush spraying), Glue small pieces of material (no particular size or shape just small enough to do a overlap). Jigsaw pieces around frame. Craft stores have those Joelee small scrapping pieces to really customize for a person. Try Walmart, Michael's, JoAnn's too.
In case you decide to put the glass in, you can also create a collage of a special time together, a place you spent time together, a holiday or vacation. The possibilities are endless. Have fun.
Glue a sturdy piece of cardboard to the back of the frame. Then glue 3 dimensional items such as sea shells, fancy old buttons, broken costurme jewelry, etc. to the front of the cardboard. Now you have a custom "picture" to hang.
If you don't want to put backs on them and maybe acrylic instead of glass to frame things -you could arrange them at angles artistically on a wall to form a pattern and perhaps mount something in or one more of them...to create a wall arrangement.
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