Here is the game (comments are merely greetings in Hungarian, sorry for that)
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first mistake IMO. This should have been at K-16 (or around that)-
second mistake. I panicked about my first mistake and quickly committed a second one. This should have been at Q-10 or Q-11 I think-
was probably too slow. I didn't want to die there and considering my already bad situation I didn't want to leave weak groups around. Still, probably I could have managed without - I don't like
. I feared that black would get a big framework too easily. Maybe I should have attacked at R-8 or extended around C-10?-
... omg, just omg-
judging from the continuation, this should have been better one place lower, at E-3.- rest is me trying to do something resulting in some success, but not enough. Btw is :w224: necessary?
- I would play N15 right away (avoid the atari and threaten to cut off the upper black group). The empty triangle at 
looks very inefficient. 
allows black to connect underneath. If you could prevent that you'll have more initiative.
I would connect at D4 and make a wall. Imagine if the C7 stones were not connected underneath (as you could have prevented before) - this would now give you a very powerful position.
This feels really painful. Why not just block at E3? Even if C3/C4 get eaten (which is IMHO not going to happen) the resulting position would be IMHO still better than in the game.
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