Where do you train? A disco? So this is normal in Korea? lol
Anyway, on your squat I can tell you this. Tighten your upper back more, pull more air into your belly, strengthen your spinal erectors/lower back, and loosen your hamstrings (through stretching & foam rolling).
Also, I can't really tell this too much as where your pressure is on your feet, but finding some better shoes to squat in should help (do a search on here). Most of this is not important now, but when you have some challenging weight on there you'll start to see most of this becoming problematic.
Deadlift looks pretty darn good to me.
On your bench, get your wrist in line with your elbows so that your forearm is perpendicular to the floor. Other than that, you can change some things depending on your goals, but I don't see anything major.
I wish I knew enough about the power clean to help you I do them, but I don't feel qualified to critque there. Good lifting bud.