DIY Fish Scale Wall Art -- poster paper cut in circles, spraypainted, layered into a fishscale pattern on fiberboard, trimmed out, and hung in a dining room.
Two Girls Being Crafty: Painted Wall Art for Non-Artists inspired by this wall art from World Market
Elmer's Glue on Canvas, then paint the whole thing. I have totally done this, but with a hot glue gun. Elmer's Glue seems to be a better idea since hot glue leaves behind strings and is harder to work with.
Here's a fun little canvas I made using some of the my new Doily rub-ons. Doilies Rub-ons Blank Canvas (mine is x Decoupage First cut out some of the Doilies Rub-ons are start putting them on.