For DLifts:
I don't like that exaggerated hyperextension at the top, especially because you don't set your lower back in the right position before each rep. And maybe turn around so you aren't lifting right in front of the mirror. (If you don't want to turn around, then bring your Rambo poster to tape up in front of you.) Those reps looked easy! Put some more weight on the bar -- what have your jumps been?