They're on 9x12 400 CP watercolor paper. I don't plan on matting them b/c they're dual sided. The only cool thing I could ever do is frame with 2 glass pieces and hang them all like a wall divider or something maybe.
If you ever decided to make them 1 side, and matted for framing, I know I would consider purchasing them to decorate with and I'm sure many other ladies would too.