An Interesting Game

This was a game I played in a match for my county in a national tournament - I ended up losing and was wondering if any of you could help me find some errors or good things which white or black did!

i did not quite understand why you gave him a free knight and rook

on which moves?

I think you lost the game with 37. Qd3. instead you could have played 37. Rxg7+ Kxg7 38. Nxd8 winning a bishop and threatening 39. Nc6 and you have a good chance to queen the a-pawn  

also instead of 15. b5 Qc5 16. Kf1 i had probably played 15. Nh2 Qc2 16. c3 

at that point oi did not see that and that wud of possibly won me the game

i was looking at Qa2 instead of Qd3 

did u not se 37. Nxd8 Rxc7 38. a7

 overall i thought it was an interesting game and u played well and created some nice winning chances =)

i saw a fair few issues

but i think iv gone over them with you