
Taking this example, there are different ways to combine the layers.
Idea #1: One way to blend the types elements (the video and paintings), is to have more video elements. For instance, we could make a two-part miniature for the arch (B), and video record a dolly move (w/ proper green screen techniques), and then put it in. This would create more realistic space and give control over the edges.
Technical: Great green screen. Timed movements. Equal perspective with swimmers (angle and size).