NL 100: Trivial toppair hand

Did I play this right? Standard? Opp seems semi-tight and passive both prf and postflop, but I havent really played that many hands with him.

Party Poker No-Limit Hold'em, $ BB (6 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($72.67)
BB ($57.75)
UTG ($113.49)
Hero ($100.20)
CO ($76.14)
Button ($236.90)

Preflop: Hero is MP with Qhttp://www.flopturnriver.com/phpBB2/...miles/club.gif, Khttp://www.flopturnriver.com/phpBB2/...es/diamond.gif. SB posts a blind of $0.50.
1 fold, Hero raises to $4, CO calls $4, 2 folds, BB calls $3.

Flop: ($12.50) Qhttp://www.flopturnriver.com/phpBB2/...es/diamond.gif, 7http://www.flopturnriver.com/phpBB2/...iles/spade.gif, 9http://www.flopturnriver.com/phpBB2/...es/diamond.gif (3 players)
BB checks, Hero bets $8, CO raises to $16, BB folds, Hero calls $8.

Turn: ($44.50) 7http://www.flopturnriver.com/phpBB2/...iles/heart.gif (2 players)
Hero checks, CO bets $30, Hero folds.

Final Pot: $74.50

seems fine, sometimes i bet $25ish on the turn and fold to another raise.