Direction of play?

Player name: 
Understudy
Player rank: 
11k
Player color: 
White
Opponent name: 
Igoyaruzo
Opponent rank: 
11k
Review status: 
assigned
Reviewer: 
Review rating: 
Review instructions: 

0.5 komi for w. Large semeai resulting in seki. Lots of mistakes in fighting. W lost by 4.5. I miscounted, but I am not sure if my attitude to the game (decisions in direction of play) were faulty. Could this situation have been avoided for white simply?

Sgf file: 
File MEWAHKHZTO.sgf Fullscreen
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