What should i have done differently, and more importantly, why? Thanks.

Full Tilt No-Limit Hold'em, $0.10 BB (9 handed) Hand History Converter Tool from FlopTurnRiver.com (Format: FlopTurnRiver)

Button ($10.85)
SB ($25.05)
BB ($11.65)
UTG ($5.30)
UTG+1 ($1.25)
MP1 ($12.55)
MP2 ($11.80)
Hero ($2.60)
CO ($7.55)

Preflop: Hero is MP3 with A, J.
4 folds, Hero raises to $0.3, CO calls $0.30, 2 folds, BB calls $0.20.

Flop: ($0.95) Q, 2, 7 (3 players)
BB checks, Hero bets $0.5, CO calls $0.50, BB folds.

Turn: ($1.95) J (2 players)
Hero checks, CO checks.

River: ($1.95) T (2 players)
Hero checks, CO bets $1.2, Hero calls $1.20.

Final Pot: $4.35