Did I play this well or should I have bet the river?

Villian is 42.6/4.3/1.06/47

Party Poker 1/2 Hold'em (9 handed) FTR converter on zerodivide.cx

Preflop: Hero is Button with A[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/diamond.gif[/img]. CO posts a blind of $1.
<font color="#666666">6 folds</font>, Hero calls, SB completes, BB checks.

Flop: (4 SB) 5[img]/images/graemlins/club.gif[/img], 6[img]/images/graemlins/heart.gif[/img], T[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, BB folds, Hero calls.

Turn: (3 BB) 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, SB calls.

River: (7 BB) 3[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
SB checks, Hero checks.

Final Pot: 7 BB