Make yo chest explode: Really stiff and messy, and try not to immediately go for a grab as your opener and then just pause there, it looks odd. On that note, too much grabbing. The leg grab at the end wasn't really needed either, and no pose.
Flipped to death: That's pretty much the same opener, isn't it? Anyway, as I said, really messy, don't like how you let Uke hit your head. Still too much grabbing, and really stiff.
Trickkick: Stiff as usual and the kick wasn't too strong. You should have just posed instead of going for the flip, which wasn't too amazing.
Not even trying: Decent, I guess, but I don't like the simplicity in it. Ending was also stiff.
Relax more joints and learn to balance and you'll get better.