Replay 3-1: Pretty good, try to get more than one dm at a time. Also try to stay on your feet, falling over doesn't look very good. Try not to grab too much either. Grabbing has a weird effect on the look of the replay. It kind of looks like you're swinging around.
Replay 4: This one definitely seemed more destruction oriented. Try to keep moving one way. For example, don't be spinning one way and then just stop and start spinning the other way.
You have great potential. Keep up the good work!