advice please on a lucky win


nice catch ricardo!!! i didnt see that at all either!!! i would have been more eager to grab the free gear on g8!!!

thank you pawnpower - I thought ...a5 was a mistake because I expected him to take the immediate knight and be up a piece. Is that inaccurate do you think?
If he had followed up by castling like you suggested, I would have been hurting even more - I'm glad he didn't castle.

I am a mediocre player at best, and got myself into some big trouble in the middle game against my opponent. A few moves of mine are under specific question, but in addition, I would be very interested to hear what some of you would have done differently, and why. I was proud to pull out the win after he failed to capitalize on my tactical blunder by capturing my knight, but I set up a position that was dangerous in many more instances than just that one queen move. Please see my annotations for details, and thank you for any comments!