These look pretty good to me. One minor thing I'll throw out: When you set the bar down, stick your butt back to lower the bar, and don't start bending your knees until after it's dropped below them. You're bending them early, which is why the bar has to go around them on the way down.
Your surface is obviously tilted a bit. This is no big deal, but I've found that a small towel can chock the plates on one or both sides to keep the bar closer to where you want it for the lift - that way, you only have to pull it back an inch or two in your setup. They're enough to stop it from rolling, but not hard enough to cause problems if you accidentally hit them when you lower the bar.