KQ to river flush scare...good or bad play?

[iheartponeez]

Villain is 54.7/24/2.89
PokerStars No-Limit Hold'em, $0.25 BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: 2+2 Forums)

UTG ($26.20)
MP ($23.45)
Hero ($24.15)
Button ($27.60)
SB ($36.85)
BB :#A500AF(Villain)/ ($31.20)

Preflop: Hero is CO with K[img]/images/graemlins/spade.gif[/img], Q[img]/images/graemlins/heart.gif[/img].
<font color="#666666">2 folds</font>, <font color="#CC3333">Hero raises to $1</font>, <font color="#666666">2 folds</font>, BB :#A500AF(Villain)/ calls $0.75.

Flop: ($2.10) 5[img]/images/graemlins/club.gif[/img], A[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $2</font>, Villain calls $2.

Turn: ($6.10) 9[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Villain checks, <font color="#CC3333">Hero bets $3</font>, Villain calls $3.

River: ($12.10) K[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Villain bets $6.75</font>, Hero calls $6.75.

Final Pot: $25.60


What's my line here? Did I play well or poorly?