Senseless bluff, or good attack at a missed flush?

First orbit around the table. Villian being passive preflop was my only read. Was it foolish to attempt this overbet bluff so soon? Comments about any part of the hand would be much appreciated. Thanks
Party Poker No-Limit Hold'em, $ BB (6 max, 4 handed) CP hand converter

BB ($27.35)
UTG ($37.16)
Button ($17.94)
Hero ($24.50)

Preflop: Hero is SB with Q[img]/images/graemlins/spade.gif[/img], A[img]/images/graemlins/diamond.gif[/img]. Hero posts a blind of $0.10.
<font color="#666666">1 fold</font>, <font color="#CC3333">Button raises to $0.5</font>, <font color="#CC3333">Hero (poster) raises to $1.65</font>, BB calls $1.50, Button folds.

Flop: ($4) 2[img]/images/graemlins/club.gif[/img], K[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $2</font>, BB calls $2.

Turn: ($8) J[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, BB checks.

River: ($8) J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, <font color="#CC3333">BB bets $5</font>, Hero calls $20.75 (All-In), BB folds.

Final Pot: $33.75

[djoyce003]

your bet really looks like a bluff....the only thing folding here I think is someone that you already have beat with your ace high.