It's pretty average. Backflip setups instantly turn me off for some reason. You should go for something more creative. Back full was poorly executed. Instead of extending abs, extend your hips. Also point your toes while twisting. It looks better. Followup wasn't bad, but the trick after it was. That sideflip thing was way too stiff. Your cork failed because your swingthru was trash, for a lack of a better word. You should extend your planted hip for a while before contracting your other one. Also experiment with the foot plant. Sometimes you get way too angled and mess up entirely. That means you need to plant your foot earlier. Extend your swinging knee during the swingthru, because that is its purpose. You won't get any momentum if you don't gain it from that swinging leg. Extend abs during backflip based setups. You look like a ball.
Work harderer. Good.