Blind steal gone horribly right, now what

[djoyce003]

alright...in my quest to maximize value I'm posting hands where I think I screwed up. I might have been able to raise a little more on the flop....this guy is a 40/6 donkey. The board pairing on the turn coupled with his lead worried me a little so I just called (raise here? How much?) River bet seemed fine after he checked....I bet what I thought he'd call.

Party Poker No-Limit Hold'em, $ BB (6 max, 4 handed) FTR converter on zerodivide.cx

Hero ($85.95)
SB ($58.50)
BB ($60.30)
UTG ($132.19)

Preflop: Hero is Button with 7[img]/images/graemlins/heart.gif[/img], 5[img]/images/graemlins/heart.gif[/img]. SB posts a blind of $0.25.
<font color="#666666">1 fold</font>, <font color="#CC3333">Hero raises to $2</font>, <font color="#666666">1 fold</font>, BB calls $1.50.

Flop: ($4.25) 8[img]/images/graemlins/spade.gif[/img], 4[img]/images/graemlins/heart.gif[/img], 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $3</font>, <font color="#CC3333">Hero raises to $8</font>, BB calls $5.

Turn: ($20.25) 4[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">BB bets $5</font>, Hero calls $5.

River: ($30.25) Q[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
BB checks, <font color="#CC3333">Hero bets $12</font>