I've only recently started dabbling with collage and watercolor on canvas board.  Right now, I collage with watercolors as my base.  Some pieces are created on 140lb. cold press watercolor paper and some are on canvas.  The canvas pieces do not need to be framed, but the paper will need framing. 
​If there's anything you're interested in, just ask!
Please let me know if you have any questions!  Enjoy!