Framing the Subject

I learned about framing as a kid when I was first exploring photography.  Placing the subject so that you have to peer around something in the foreground creates a sense of depth as well as a sense of mystery.
Looking over, past, or around something also gives special attention to a second subject, kind of a two-for-one painting.

Here's a painting I did in Naples, Florida several years ago that illustrates this approach.