How do you go about betting your set when you are OOP?

PokerStars No-Limit Hold'em, $0.25 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

UTG+1 ($31.30)
MP1 ($5.60)
MP2 ($21.55)
MP3 ($28.25)
CO ($16)
Button ($19.40)
SB ($19.75)
Hero ($33.70)
UTG ($30.30)

Preflop: Hero is BB with 3, 3.
5 folds, CO raises to $0.75, 2 folds, Hero calls $0.50.

Flop: ($1.60) 9, 3, 8 (2 players)
Hero checks, CO bets $1, Hero calls $1.

Turn: ($3.60) Q (2 players)
Hero bets $3, CO folds.

Final Pot: $6.60