Squat Form Check

[Joey Goldman]

Here is me squatting 110kgx5 @ ~73kg @ 16 years old:

http://www.youtube.com/watch?v=UETaxPpgGmI&feature=player_embedded

Problems:

It looks like my knees are moving more than they ought to, this would be solved my focussing more on shoving them out, right?

My elbows hurt - thus the compression sleeves - does anything look wrong with bar position?

My left shoulder also hurts...

Thanks.