small flush on river

[sightless]

first orbit, two unkowns, What do i do on the river bet/call?, chek/raise?, or check/call? did i play incorectly on any streets?

Party Poker 1/2 Hold'em (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

Preflop: Hero is BB with 6[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img].
<font color="#666666">3 folds</font>, Button calls, <font color="#CC3333">SB raises</font>, Hero calls, Button calls.

Flop: (6 SB) 9[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, Hero calls, Button calls.

Turn: (4.50 BB) 8[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">SB bets</font>, <font color="#CC3333">Hero raises</font>, <font color="#CC3333">Button 3-bets</font>, <font color="#CC3333">SB caps</font>, Hero calls, Button calls.

River: (16.50 BB) 6[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
SB checks, HERO?