Party Poker 1/2 Hold'em (8 handed)

Preflop: Hero is SB with , .
6 folds, Hero raises, BB 3-bets, Hero calls.

Flop: (6 SB) , , (2 players)
Hero checks, BB bets, Hero calls.

Turn: (4 BB) (2 players)
Hero checks, BB bets, Hero raises, BB 3-bets, Hero caps, BB calls.

River: (12 BB) (2 players)
Hero bets, BB calls.

Final Pot: 14 BB

Preflop: BB was so loose, I knew he'd call my raise. When he re-raised me, I figured he put me on a steal. I didn't want to reveal the strength of my hand yet...

Turn: Nearly regardless of that turn card, I was going to check-raise. When he 3-bet, I put him on top-pair or an overpair - neither of which worry me much.

River: My line was to bet/call here. I thought there still was a great chance I was ahead.

Should I have been more aggressive or less aggressive anywhere?

Looks pretty good to me. People will almost never give you credit for that big of a hand when you raise from the button or SB, and I think it's unlikely you are behind here.