I have been experimenting with mixed media on backgrounds to start with. Using a few layers of patterned paper with a solid black mat I started the base background. I didn't have as many photos to cluster so made a background base instead.
Using my splatter technique I add 3 shades of paint to the area... black, grey and white. I then used a thin layer of modeling paste and smeared it cross corner on outer edges for more texturing look. Notice it grabbed and smeared some of the paint with it.
Now that I peaked your interest please view my full page at the Robin's Nest blog.