This is my new solution for storing small paintings. My husband built and installed it today and I've very happy with it.
Before now I've just made several little stacks against a wall on top of a cabinet. It was not ideal because I could only see about 6 paintings at once. With this I can see most of what I've got at any time. I can put new stuff in front, and there's not danger of it ever slipping off because of the little lip on the front of each shelf.