Cork Backflip Thingy: One thing I would sugjest is to keep everything going in the same direction. Like if you make a spin going clockwise, make every other spin going clockwise.
Tricking-REVISED: The transitions were good, and the only thing I can spot that I didnt like is that your arm ghosted through your leg at frame 1055.
Tricking3: The backflip at 1205 could've had more work. It seemed like you were trying to do a cork, but instead went with a backflip. If you were trying to do a cork, extend the glute of the leg that's kicking up to give it that angle, to where you can do a spin. If you were trying to do a backflip, make yourself more symetrical when you do, to avoid your arms and legs ghosting. Doing this also helps you not twist your body while your in mid air.
Overall, nice replays and keep up the good work.