It looks pretty good. Couple of minor things, first, use the edit function to cut the clip down to the unrack and rerack. It seems picky, but it gets annoying having to wait fifteen seconds for the unrack.
Two, google valsalva - getting tight. Do it before you unrack.
Three, develop a routine so you aren't standing there with the weight on your shoulders psyching yourself up. Unrack, right foot back, left foot back, deep breath, squat.
Rest of the squat looked good.