I removed the mats and prints. One frame got to keep it's glass and other got to keep it's cardboard back piece.
The cardboard just need decorated now. I added a piece of blue scrapbook paper, a picture and a few shell stickers.
I didn't add ribbon to mine (yet- this green doesn't match and I haven't picked any more up ribbon), but I do like the looks of a ribbon on the edge.
Last, add your 3-d items and use some wood glue to secure it all together, with the glass holding frame on top and the picture one on the bottom. If you were picky, you could use some dry wall compound to seal the edges where the two frames meet and then repaint the frames. Otherwise, you can see the seem where the two frames sit together on the sides.