Years ago, I stitched a companion to a picture frame that contains a picture of me and my husband just before we married. For the companion, I had my new monogram painted inside the frame. After I stitched it, I sent it to a finisher who used heavy cardboard for the stability of the top and bottom. She backed the top with moire; the bottom she covered both sides with moire. Both pieces were edged with a twisted cord of perle cotton. The sides are a slightly lighter-weight cardboard, covered by shirred moire.