[BrRsn]

^^ Going deep but no offence, I thought you were gonna fail judging by the speed you went down at. Try to control your downward movement too.

Also try to do the squats but do not look at the mirror. Do them facing the opposite way. Pick something at eye level and just stare at it and nothing else. Keep focus on it throughout your squat, that will force you to keep your head up and chest out.

Of course keep your breathing right. Big breath at the top, hold it, start letting it out slowly as you start feeling yourself slowing down on the way back up