All I can say is instead of 10.BxNf6 why not 10.Bh5 and try to put some pressure with the g,h pawns. Also your king is in the center.
When you took the knight the Black queen was activated while your queen was not.
I would have activated the queen with Qd2 and then 0-0-0 followed by a pawn sacrifice to open up the g or h files for the heavy artillary.
You had a nice aggressive tempo going there. :)
I think you should have castled queenside early in the game to get your king out of the center.
a3? whats the purpose of this move? just losing tempo
during all game your c3 knight might move to d5
15. Nd5! wins the game
16. Nh2?? where knight going?
19. Bd5! wins material
work more on ideas of 4nights opening
put your pieces on weak places like d5 square in this match
dont push your pawns with no reason like 11. g5?
I blundered very bad in the end of this game. Did I make other blunders or mistakes? Please comment and give me advice. Thanks!