Sounds to me like you're starting to fret about it a touch mate?!
Keep your head. You'll be surprised how much you learnt at your days at a unit. I was!
If you've got time, read a couple of books on ATC, there's a couple of good'uns on the suggested reading list they sent.
Think logically, stick to your guns but don't be totally infelxible to a change of mind.
Most importantly remember that they won't bite.
Try to relax
