1/2, TPNK, need a plan

[bobman0330]

Party Poker 1/2 Hold'em (6 max, 5 handed) FTR converter on zerodivide.cx

Preflop: Hero is SB with A[img]/images/graemlins/diamond.gif[/img], 7[img]/images/graemlins/heart.gif[/img].
UTG calls, <font color="#666666">1 fold</font>, Button calls, Hero completes, BB checks.

Flop: (4 SB) 2[img]/images/graemlins/diamond.gif[/img], K[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(4 players)</font>
Hero checks, <font color="#CC3333">BB bets</font>, UTG calls, Button calls, Hero calls.

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

River: (7 BB) J[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, BB checks, <font color="#CC3333">Button bets</font>, Hero folds, BB calls.

Final Pot: 9 BB

I was calling a bet from the BB, including an overcall (i think), and folding to action from the button. That's not what I'm worried about though. What should my general gameplan be on the flop?