Levitation photography is usually done in two ways, in camera and out of camera. Here is a fun tutorial on how to do in camera levitation photography. Unfortunately you can't just learn how to do great in camera levitation photography. Yes, there are some techniques, but mostly it comes down to timing. You have to direct your subject well so you can capture them in the air. The only thing that can help you succeed in getting sharp images is a high shutter speed and maybe a small aperture. Shoot for the f10+ level, but prioritize shutter speed and proper exposure.