I'm participating in a Magazine and Gesso Mingle in my Altered Designs group. The technique comes straight out of Bernie Berlin's book and was one I've never done before. You find a picture in a magazine and make it into an atc. Cover the picture LIGHTLY with gesso and let dry. After it dries, trace the picture with a fine black permanent marker. Fill in the picture using paints, colored pencils, neon gel pens and whatever suits your fancy. Once you've done that, you can go back over the black lines.
Now, I personally like the way these came out. AND, they were a LOT OF FUN to make. I don't think I'll make it a practice of doing this technique, but once in a while, for a change of pace, it'll be fine!