First NL Post: Calling W/ TP vs Big River Bet

[gaming_mouse]

I play limit but was playing around at a 50 NL. Sat down a few hands ago, hit some cards, probably have a fairly aggressive image. No reads on villain.

All comments welcome, river especially:

Party Poker No-Limit Hold'em, $ BB (9 handed) pokerhand.org hand converter

UTG+1 ($34.70)
MP1 ($44.35)
MP2 ($72.49)
MP3 ($49.55)
CO ($47.60)
Button ($45.10)
Hero ($78.10)
BB ($24.01)
UTG ($53.10)

Preflop: Hero is SB with K[img]/images/graemlins/club.gif[/img], Q[img]/images/graemlins/club.gif[/img]. Hero posts a blind of $0.25. UTG posts a blind of $0.50.
UTG+1 calls $0.50, <font color="#666666">3 folds</font>, <font color="#CC3333">CO raises to $1.5</font>, <font color="#666666">1 fold</font>, Hero (poster) calls $1.25, <font color="#666666">1 fold</font>, UTG+1 calls $1.

Flop: ($5) K[img]/images/graemlins/heart.gif[/img], 7[img]/images/graemlins/heart.gif[/img], J[img]/images/graemlins/club.gif[/img] <font color="#0000FF">(4 players)</font>
<font color="#CC3333">Hero bets $2</font>, UTG+1 folds, <font color="#CC3333">CO raises to $4</font>, <font color="#CC3333">Hero raises to $6</font>, CO calls $2.

Turn: ($17) 8[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets $5</font>, <font color="#CC3333">CO raises to $10</font>, Hero calls $5.

River: ($37) 4[img]/images/graemlins/spade.gif[/img] <font color="#0000FF">(3 players)</font>
Hero checks, <font color="#CC3333">CO bets $20</font>, Hero folds.

Final Pot: $57