Looks pretty good, so only minor stuff.
Stepping out, should be one step, right foot back, left foot back and squat, not a bunch of little steps. It'll help when you do go heavier. I know its tough in those squat racks; wish more gyms had real power racks.
Also don't get in the habit of looking to the side like ya did in the video. Keep your head straight ahead...Guys I used to workout with pinned a naked barbie doll to the wall above the mirror and they looked at that to keep their head up. I just keep my head up but my eyes straight so i can watch my form. Either way, head should be up and you shouldn't be looking to the side.