This hand was supposed to play itself. I think I butchered it with my bet sizing though. This is an area I don't really understand, I tend to press "1/2 pot", "3/4 pot" or "pot" almost at random, maybe I should play limit My thoughts are at the bottom and I'd appreciate any input.

Villain is loose and passive, 33/6.

Party Poker No-Limit Hold'em, $0.10 BB (10 handed) - Party-Poker Converter Tool from FlopTurnRiver.com

CO ($10)
BB ($3.35)
Button ($1.93)
Hero (MP3) ($10.51)
UTG+1 ($6)
UTG ($15.63)
MP2 ($10)
UTG+2 ($7.66)
SB ($11.17)
MP1 ($10.55)

Preflop: Hero is MP3 with J, A
2 folds, UTG+2 calls $0.10, 2 folds, Hero raises $0.40, 4 folds, UTG+2 calls $0.30

Flop: ($0.95) 10, Q, K (2 players)
UTG+2 checks, Hero bets $0.45, UTG+2 calls $0.45

Turn: ($1.85) Q (2 players)
UTG+2 bets $0.30, Hero raises $1.33, UTG+2 calls $1.03

River: ($4.51) Q (2 players)
UTG+2 bets $1, Hero ?
Preflop: this should have been 0.50 because of the limper, I was lazy and used the 4xBB preset

Flop: I bet too small here because I really wanted him calling with a hand like Qx (he'd called down with second pair before). This should have been pot since the flop hit his range so hard?

Turn: I don't know whether I like this card or not, it scares Kx, Qx now pays me off, maybe he filled up (but only KQ, QT would make sense). I guess I should raise pot here too?

River: Sucks to be me, worst card in the deck, etc. Snap fold right? I don't beat anything other than a busted straight draw.

I know I should put him on a range here, honestly I feel like it's any pair, two pair, jack for OESD, or sooted spades on every street. This seems too big to enumerate and I'm hazy on how it affects my bet sizing anyway, so I tend to pick a particular part to worry about (in this case, keeping 1pairs in the hand).