I'ma go with some of the don'ts! Please take everything with a pinch of salt though, as there are no set rules for ukebashing.
475-470: Left knee twitch. Pretty self-explanatory.
450-430: You're very stiff and boring, move more.
Last two dm's were VERY lacking. I like to end my replays with a bang.
Try to incorporate your sparring skills into ukebashing man. Just because you're supposed to make uke go to ten pieces doesn't mean you can't look good during the process.
That's all I could think of. Nice boom in the beginning, wish you had done the setup for it a bit nicer.