Did I play this wrong? Bad idea to slow play?

Have no read on Villain as he just sat down at the table, probably played about 3 hands.

Party Poker No-Limit Hold'em, $ BB (6 max, 6 handed) converter

SB ($35.45)
BB ($18.65)
Hero ($152.16)
MP (Villain) ($27.70)
CO ($22.85)
Button ($17.75)

Preflop: Hero is UTG with J[img]/images/graemlins/diamond.gif[/img], Q[img]/images/graemlins/diamond.gif[/img]. SB posts a blind of $0.10.
Hero calls $0.25, <font color="#CC3333">MP Villain raises to $2</font>, CO calls $2, <font color="#666666">3 folds</font>, Hero calls $1.75.

Flop: ($6.35) J[img]/images/graemlins/spade.gif[/img], 8[img]/images/graemlins/diamond.gif[/img], J[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">Villain bets $3</font>, CO folds, Hero calls $3.

Turn: ($12.35) 7[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
Hero checks, Villain checks.

River: ($12.35) K[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets $5</font>, Villain calls $22.70 (All-In), Hero calls $17.70.

Final Pot: $57.75