How Would You Bet This?

[Two_Stepper 0]

Holdem No Limit $0.25Seat 2 - TWO_STEPPER ($30.95 in chips)Seat 6 - Villian ($24.60 in chips)Dealt to TWO_STEPPER [Jc Jh] Villian - Raises to $1 from UTG+12 - FoldsTWO_STEPPER - Raises to $3.75 from SB2 - FoldsVillian - Calls $2.75Pot $7.75*** FLOP *** [10d 3h 9s]TWO_STEPPER - Bets $2.50Villian - Calls $2.50Pot $12.75*** TURN *** [10d 3h 9s] [5s]TWO_STEPPER - Bets $3.50Villian - Calls $3.50Pot $19.75*** RIVER *** [10d 3h 9s 5s] [Qh]TWO_STEPPER - Bets $3Villian - Calls $3Pot $25.75My main concern is the bet size on the flop, turn, and river. I think I underbet the pot every street. How would you guys play this?EDIT: I just realized I posted this is the wrong forum. I re-posted this is the NL forum. Please respond to it there.