OP, this looks really good. You are a pretty flat hitter and I can tell that you really know how to hit. One thing I noticed is that you (properly) alter your swing tempo depending on the height of the ball. One a few of those low ones, you CRUSH them in order to get the height necessary to clear the net. Excellent job. Backhand is excellent also.
Footwork is a little sloppy and slow, though. Sometimes you split step, sometimes not. Sometimes you walking step into the ball. Doesn't bother me too much... it happens when we get old and big.