0.50/1 Non-nut flush play

[theos]

Most of the time playing the A-small suited hands is easy - you either get a flush draw and play it aggressively or you get out. But what about when you're drawing to or have got a flush that's not that nuts? I can't help thinking I've made a balls-up of every one of my bets. In my own mind I had reasons for each of them, but were any of them grounded in sensible poker thinking?

Party Poker 0.50/1 Hold'em (8 handed) FTR converter on zerodivide.cx

Reads after 30 or so hands: BB has been giving money away (90/18/1) and Button's play has seemed fairly loose-passive (27/4/1.5).

Preflop: Hero is SB with 3[img]/images/graemlins/spade.gif[/img], J[img]/images/graemlins/spade.gif[/img].
UTG calls, UTG+1 calls, MP1 calls, <font color="#666666">2 folds</font>, Button calls, Hero completes, <font color="#CC3333">BB raises</font>, UTG calls, UTG+1 calls, MP1 calls, Button calls, Hero calls.

I get in for cheap when it first comes around; following the raise I reckon there's enough bets in the pot to make it worth another 0.50 to chase a flush.

Flop: (12 SB) T[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/spade.gif[/img], 5[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(6 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, UTG calls, UTG+1 folds, MP1 folds, <font color="#CC3333">Button 3-bets</font>, Hero calls, BB calls, UTG calls.

I've got 6 players in the flop with me so it seems worthwhile to bet since I have a 35% chance for the flush. But then it's raised twice more and now I'm betting only because I've got the pot odds.

Turn: (12 BB) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">BB raises</font>, UTG folds, Button calls, Hero calls.

So I've hit my flush; BB's raising me and button's calling two. I'd like to raise again but chicken out.

River: (18 BB) 2[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks...

And if I wasn't scared before, I'm very worried once I see the river. Both BB and Button are representing strong hands and if they hadn't already hit a flush, they could still easily hold the required ace or queen.

So, how badly did I play? [img]/images/graemlins/crazy.gif[/img]