Maybe it's just me but you seem to throw the ball too slow. I don't see you pushing the ball out and letting it drop, so I suspect your arm swing isn't as free as it could be. Something is robbing you of speed though and the swing looks a little controlled.

I also notice you load the wrist up in your starting position. Try unloading it a little and see if it helps. What could happen is as you push the ball away and let it drop, your wrist is going to naturally straighten out. This is adding extra pressure to the finger tips in the down swing since the weight of the ball is more on the fingers than the entire palm as you start it out.

Your backswing also loops a little bit behind your back. You could try starting the ball closer in to the center of your chest to correct it, which takes zero concentration to change, so it's easy to do.

Other than that it looks great. Nice and fluid.
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There is nothing so easy to learn as experience and nothing so hard to apply.