I think I played this ok, felt that betting the river was going to gain me nothing... thoughts?

Party Poker No-Limit Hold'em, $0.04 BB (8 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

SB ($1.56)
BB ($1.59)
UTG ($1.89)
UTG+1 ($6.21)
MP1 ($2.86)
Hero ($4.95)
CO ($4.94)
Button ($4.90)

Preflop: Hero is MP2 with K, J. UTG posts a blind of $0.04.
UTG+1 calls $0.04, MP1 calls $0.04, Hero calls $0.04, 2 folds, SB completes, UTG (poster) checks.

Flop: ($0.22) K, J, Q (6 players)
SB checks, UTG checks, UTG+1 bets $0.12, MP1 calls $0.12, Hero raises to $0.52, SB folds, UTG folds, UTG+1 calls $0.40, MP1 folds.

Turn: ($1.38) 6 (3 players)
UTG+1 checks, Hero bets $1, UTG+1 calls $1.

River: ($3.38) A (3 players)
UTG+1 checks, Hero checks.

Final Pot: $3.38