You have two pairs of lifting shoes? Rad.
Alright dude. First of all, deep breath. Relax. You'll be fine.
Now, take your next squat workout off. You won't die, your hair won't fall out, and your muscles won't turn into skim milk. With the extra time you have, read this article: http://startingstrength.com/index.ph...2#.Ujn8HmTTUQU
Your next workout after that, do the following when you squat:
1. Big breath in, hold it, and set your back before descent.
2. Knees out
3. Knees out!
4. KNEES OUT!!!
5. Seriously, shove your knees out farther and harder than you think you need to.
6. Drive up out of the hole using your hips, while keeping your chest up.
Re-post another vid after you do this and tell us how it felt.