Did any crafters watch a DIY Scrapbooking about two months ago that gave a short tutorial of how to paint?

I have been trying to find that video for you, but I cannot find anything exactly as you described. I did, however, find a video link that uses paint and Kraft (same as material cereal boxes are made of), to make a collage, which could certainly be adapted to fit a 12x12 scrapbook cover. I hope this video helps just a bit.