Played AK to weak?

[Purm]

EverestPoker - $0.15/$0.25 - No Limit Hold'em
MP$4.65)
CO$45.70)
BTN$22.70)
SB$24.50)
BB: Hero($60.05)
UTG$24.95)

Preflop Hero [K [img]/images/graemlins/club.gif[/img] A [img]/images/graemlins/diamond.gif[/img]]
UTG bets $0.90, MP calls $0.90, 3 fold, Hero calls $0.65
Flop $2.85 [7 [img]/images/graemlins/club.gif[/img] 6 [img]/images/graemlins/spade.gif[/img] K [img]/images/graemlins/heart.gif[/img]]
Hero checks,UTG checks, MP checks
Turn $2.85 [5 [img]/images/graemlins/club.gif[/img]]
Hero bets $2.00, YTG calls $2.00, MP folds
River $6.85 [8 [img]/images/graemlins/club.gif[/img]]
Hero bets $3.00, UTG raises to $6.80, Hero folds
UTG collects $12.25

Villain is 68/42/6.7
Couldn't get myself to raise it PF out of 'fear' being OOP with AK again, expected him to call. Checked on flop to try and c/r, when I think about it that was just stupid. Should have bet to see if I had the best hand, which I probably had. Did turn bet to atleast get some value. Riverbet was half pot for value/blocking purposes. As soon as he reraised that weird amount I feared a flush and folded. Think I should have just called with the odds I got.
I guess I found my own mistakes by posting this, but some comments on it would be nice.

Thx.