Hips a tad lower, this will help you keep a more flat back. Try it without any weight on the bar just to see if you can keep a flat back position.
You need to sweetp the bar in towards your upper thighs. At the moment the bar is not touching your body at all.
The closer the bar is to upper thigh/ waist the better it is = more power. Use yoru lats to do this, keep your arms straight.
Punch the bar up as you go down. Your first rep you look soft, the 2nd rep was a lot better.
Do a few over head squats to get more stable but with more practice you will be a lot sharper in this position.
Looks good overall imo. Just work on the above and you will shift a lot more weight in due time