How did I play this hand and how do you extract value on the river here vs. a solid opponent?

$0.125/$0.25 No Limit Holdem
4 players
Converted at

Stacks:
UTG ($30.55)
Hero ($32.50)
BTN ($19.00)
BB ($2.30)

Pre-flop: ($0.25, 4 players) Hero is CO [2h]
UTG raises to $1, Hero calls $1, BTN calls $1, 1 fold

Flop: [7c][2s] ($3.25, 3 players)
UTG bets $2.25, Hero calls $2.25, 1 fold

Turn: ($7.75, 2 players)
UTG checks, Hero bets $4, UTG calls $4

River: ($15.75, 2 players)
UTG checks, Hero bets $12, UTG folds

Final Pot: $15.75

Hero wins $27 ( won +$7.75 )
BTN lost -$1.00
UTG lost -$7.25

You should be raising this flop 100% of the time, a nice big potsized raise then just keep pounding till all your chips are in the middle or he folds.

YEAH! What he said.

Thanks. I better brush up on ToP