I like it! It's smooth, and you have it well-centered and it doesn't do weird trajectory things, haha. one thought, though, if you haven't already taken it into account... As the ball falls, it's going to be going much faster, and as it bounces up it will slow. It will do some squashing as it lands, too, and stretching as it flies. Of course, the last bit of that is optional as I learned how to animate a ball in a more cartoonish style where squash and stretch was prevalent. But it will definitely squash as it hits the ground, realistically.

Hope that made sense it's 4:00 AM and I'm not at all coherent ahsdkjg