Villain is unknown as I just sat down. Is this board a good 3 barrel and what do you think of my sizing?

No-Limit Hold'em, $1.00 BB (6 handed) - Hold'em Manager Converter Tool from FlopTurnRiver.com

CO ($156.70)
Button ($100)
SB ($100.50)
BB ($100)
UTG ($143.60)
Hero (MP) ($100)

Preflop: Hero is MP with K, J
1 fold, Hero bets $3, CO calls $3, 3 folds

Flop: ($7.50) Q, 7, 10 (2 players)
Hero bets $5, CO calls $5

Turn: ($17.50) 4 (2 players)
Hero bets $11, CO calls $11

River: ($39.50) 6 (2 players)
Hero bets $22