Life In 19x19

Hey there! I wanted to post the game below to GTL but it takes weeks and weeks for a game to get reviewed there so I decided to post it here instead. I hope you can help me find some mistakes! It's a rather long game, and I almost made a comeback after a big blunder, but my opponent played a really nice endgame move which upset my plans to win the game. I think I played well against him over all so I want to know my mistakes. Thank you in advance ^_^

A few remarks on the opening.



We have different styles, so some plays that don't look good to me may be OK. Therefore, I was cautious in my comments.

Didn't you both miss the vital point H19 at move 252 and 253?

I really didn't stunningly like . N11 attach looks like an interesting fight to me?

Ooh, or what about at P10 already? It seems tricky for black, to me.

Thanks for the comments.