JJ played terribly. How to do better in this case?

[joker 77]

Poker Stars
Limit Holdem Ring game
Limit: $0.25/$0.5
8 players
Converter

Pre-flop: (8 players) Hero is SB with J[img]/images/graemlins/club.gif[/img] J[img]/images/graemlins/spade.gif[/img]
UTG calls, 2 folds, MP2 calls, <font color="#cc0000">CO raises</font>, Button folds, Hero calls, BB folds, UTG calls, MP2 calls.

Flop: 6[img]/images/graemlins/spade.gif[/img] T[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/club.gif[/img] (9SB, 4 players)
<font color="#cc0000">Hero bets</font>, <font color="#cc0000">UTG raises</font>, MP2 folds, CO calls, <font color="#cc0000">Hero 3-bets</font>, <font color="#cc0000">UTG caps</font>, CO calls, Hero calls.

Turn: 9[img]/images/graemlins/diamond.gif[/img] (10.5BB, 3 players)
<font color="#cc0000">Hero bets</font>, <font color="#cc0000">UTG raises</font>, CO folds, Hero calls.

River: A[img]/images/graemlins/heart.gif[/img] (14.5BB, 2 players)
Hero checks, <font color="#cc0000">UTG bets</font>, Hero calls.

Results:
Final pot: 16.5BB

I think I screwed up this hand. How to play it better?

[BigBadBabar]

joker stop posting hands, reply to some other posts for a while [img]/images/graemlins/smile.gif[/img]

[Gib]

The only thing I'm gunna say is 3bet PF.

[RemyXO]

Hand post #376 for you today? [img]/images/graemlins/grin.gif[/img]
Tough to say without any reads on CO. Would he play AT or AK like this?
3-bet preflop. Flop is fine. I'd call down after the cap and would hate that ace on the river.

[unterfish]

*Grunching* is goot.
So, PF Raise is a must IMO.
The rest is fine. The turn bet is arguable maybe. But calling down is nice.

[Boggy Depot]

"grunch"

Shoulda re-raised preflop. JJ plays better short-handed and you might push out UTG with two bets to call. UTG tried limping Preflop then goes crazy on that flop suggesting a set so I probably wouldn't have bet out on the turn and simply called to the showdown instead.