Great new's but to have a effective squat you need your toes and feet straight foward rather than at a angel because it may cause one leg to have more musel strain and more chance of pulling the leg thats at the more correct prosistion.
If you want a diagram of what i mean then feel free
May i just send you to this website - http://stronglifts.com/how-not-to-sq...ou-must-avoid/
I belive if you do everything that it says not to then you should be better
And everyone is open to mirriors or not , but i personaly think its better for myself anyhow . as i can see where i am going wrong more easyly.