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.
wonder if this would work for sweet potato fries. - A "perfect" technique for baked oven fries. A pinner says: "Seriously perfect technique. Some of the best fries I've ever eaten. And they didn't come out of a deep-fryer! They came out of my oven!