Preflop
You will see high stakes players make this open, so it cant be that bad. If the table has a lot of calling stations, nitting up a bit will also be fine though.
Flop
You do have a little something going on here with an overcard and some backdoor draws, but you still basically missed this flop. Its kind of close between C-betting and checking back, but if you are going to c-bet, you should make it smaller. He is not folding many hands for 4BB, that he would not also fold for 3BB, and this C-bet is not exactly for value.
Turn
While the previous decisions were close, betting here is a major mistake in my opinion. You turned top pair but with no kicker, and this is definitely not a hand, you want to try and get 3 streets of value with. So check back and then make a decision on the river depending on the card and his actions. This is also a spot, where ICM is somewhat important, and for that reason you want to lean even more towards doing some pot control with a marginal made hand, than you would in a cash game or the first 2-3 blind levels of a tournament.
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