"Brick Wall with Torn Paper" - Chelsea Zipperer  

I referenced this photo while creating "Cola Lisa". The paper is torn and shredded along the borders so it creates an interesting, dynamic boundary between it and the wall. I tried to do a similar effect between the painting and the ad, and I think it came out well. I used large strokes for the general area, and small jagged cuts for details, like the paper shown here has.