1. Avoid hitting your head while doing the manip. (Even though I do this sometimes, I still know it's wrong) Try to make only hands and feet juggle uke around.
2. Stop grabbing during your manips. You're supposed to manipulate uke into a position you can work with. If you have to use grab to reach him, re-edit the manip and get him into a better position.
3. This replay is dull, nothing that sticks out to the eye. The manip was okay, but the messiness of it killed the excitement. Your hits are okay, but you're way too close to uke to actually give your viewers a clearer look of destruction without having to shift+p.
4. Your way too stiff when you hit, loosen up your joints. Even loosening up a frame after contact would help.