You used slow motion well, and the twin effect at 1:30 is useful and could be utilized more with side angles earlier in the video.
I have watched several of your videos, and you have excellent videography. I don't like the look of this one though.
What is the camera and lens setup? The focal length is too short. This creates distortion. When your hand goes behind your back it looks small, and when your hand catches a ball away from your body (like at 0:43) it looks large.
Distortion is a big problem with action cameras, thankfully the solution is simple. In settings, a narrow field of view (FOV) can be selected.
by Stephen Meschke, in response to this post 2015-12-13 03:54:45