Flopped Q set, critique please

[Bats]

I have been doing ok at limit HE, and this was in my first venture into NL with real money. SB, UTG are LAG, few hands with BB. Check-raise on river caught me by surprise. How was my play overall?

ABSOLUTE: HOLDEM NO LIMIT $0.50/$1 -(5-handed)

SB ($9.50 in chips)
BB ($76.05 in chips)
UTG ($54.42 in chips)
CO -HERO ($46.58 in chips)
BUTTON ($38 in chips)

SB- Posts small blind $0.50
BB - Posts big blind $1
*** POCKET CARDS ***
Dealt to HERO [Q [img]/images/graemlins/club.gif[/img] Q [img]/images/graemlins/spade.gif[/img]]
UTG - Calls $1
HERO - Raises $2 to $2
BUTTON - Folds
SB - Calls $1.50
BB - Calls $1
MP - Calls $1
POT $8
*** FLOP *** [Q [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/club.gif[/img]]
SB - Checks
BB - Checks
UTG - Checks
HERO - Bets $4
BUTTON - Folds, SB - Folds
BB - Calls $4
UTG - Calls $4
POT $20
*** TURN *** [Q [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/club.gif[/img]] [7 [img]/images/graemlins/diamond.gif[/img]]
BB - Checks
UTG - Checks
HERO - Bets $5
BB - Calls $5
UTG - Calls $5
POT $35
*** RIVER *** [Q [img]/images/graemlins/heart.gif[/img] 9 [img]/images/graemlins/club.gif[/img] 2 [img]/images/graemlins/club.gif[/img] 7 [img]/images/graemlins/diamond.gif[/img]] [K [img]/images/graemlins/spade.gif[/img]]
BB - Checks
UTG - Checks
HERO - Bets $10
BB - Raises $20 to $20
UTG - Calls $20
HERO - Calls $10