Negative space is a simple, but powerful way to draw the viewer’s attention to the subject. It can also heighten the story you want to communicate, such as fear, awe, or, in my case, the punchline! Uncluttered backgrounds like an expanse of empty sky, open water, or a blank wall work. Let that space take up much more of the photo than the subject. If you are not in complete control of the background--a seagull overhead for instance--put that healing tool to use and wipe it out.
Negative isn’t always negative. Used well, it can be very positive!