white already lost with 5bc4 and your 5...g5! but then 6...be6?? why not take the free piece.  black was winning pretty much the whole game but 13...Qe6 threatened a lot while white totally ignored it so 14.nb5 was the turning point from winning really, really easily to complete slaughter. although 16.kc3 was also quite an important and bad move.  sorry to say, but this game was more lost by white than won by black, meaning that white made so many bad moves that black had no choice but to win.   on a more positve note, my favorite move that you made in that game was 5...g5 but you didnt follow up with 6...dxc4.  

TO improve your game immensely, post analysis where you....

Explain why chose a plan in detail where you highlight a weakness or strength of your opponent and yours...

what other move/s  was considered and discarded....

what move or plan of your opponent you tried to counter.....

doing so allows an independent party to point out a weakness or strength in your general scheming....

do so and I will help..

thx.

I agree. this would help immensely; it would help us "analyzers" understand what you thought while playing the game! (your thought process and why you made certain moves or didn't)

Ok, I'll edit the first post to include what I can remember of what I thought during the game. 

Standby....

updated with game-play thoughts included.

I think the real mystery is why the free piece on c4 wasn't taken for so many moves :/