Here's a little step by step tutorial on how to make inexpensive wall art using old canvasses.
paint (I used acrylic craft paint)
various size paint brushes
Step 1: Cover canvas in newspaper using watered down white glue and a sponge brush. Smooth out bubbled areas. (Leave a few bubbles to create texture) Allow to dry completely.
Step 3: Paint background colors. I watered down some of the colors and painted them with a sponge brush. Allow paint to dry.
Step 4: Draw image or wording on to canvas with chalk.
Step 5: Paint in image. Allow to dry.
Step 6: Use watered down paints to paint a layer over the image. Allow to dry.
Step 7: Hang on wall and enjoy :)