A little help on two hands...

[Nickoli]

I feel like I've been playing okay lately, but I ran into these two hands tonight which I I think I could've played better.

Hand one: No reads really. Just sat down.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 9 Players - (LegoPoker HH Converter)

SB: $29.35
BB: $35.05
UTG: $90.70
Hero (UTG+1): $49.50
MP1: $52.80
MP2: $44.50
MP3: $45.30
CO: $25.20
BTN: $46.70

Preflop: Hero is dealt Q[img]/images/graemlins/heart.gif[/img] Q[img]/images/graemlins/spade.gif[/img] (9 Players)
UTG folds, <font color="red">Hero raises to $1.50</font>, 4 folds, BTN calls $1.50, 2 folds

Flop: ($3.75) K[img]/images/graemlins/diamond.gif[/img] 4[img]/images/graemlins/diamond.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (2 Players)
<font color="red">Hero bets $3.00</font>, BTN calls $3.00

Turn: ($9.75) J[img]/images/graemlins/club.gif[/img] (2 Players)
<font color="red">Hero bets $6.00</font>, BTN calls $6.00

River: ($21.75) 4[img]/images/graemlins/heart.gif[/img] (2 Players)
Hero checks, <font color="red">BTN bets $21.00</font> Hero???


Hand two. I'm tilting a bit and I think that is obvious to the people at the table. This villian here has been being very aggressive.

Full Tilt Poker - No Limit Hold'em Cash Game - $0.25/$0.50 Blinds - 9 Players - (LegoPoker HH Converter)

SB: $38.90
BB: $50.00
UTG: $28.15
UTG+1: $37.70
MP1: $48.50
MP2: $84.60
MP3: $46.90
Hero (CO): $59.15
BTN: $69.05

Preflop: Hero is dealt 6[img]/images/graemlins/spade.gif[/img] 6[img]/images/graemlins/heart.gif[/img] (9 Players)
UTG calls $0.50, UTG+1 calls $0.50, 3 folds, <font color="red">Hero raises to $2.00</font>, BTN folds, SB calls $1.75, BB folds, UTG calls $1.50, UTG+1 calls $1.50

Flop: ($8.50) 4[img]/images/graemlins/club.gif[/img] K[img]/images/graemlins/club.gif[/img] 5[img]/images/graemlins/spade.gif[/img] (4 Players)
<font color="red">SB bets $8.50</font>, 2 folds, <font color="red">Hero raises to $18.00</font>, SB calls $9.50

Turn: ($44.50) 5[img]/images/graemlins/heart.gif[/img] (2 Players)
<font color="red">SB bets all-in for $18.90</font> Hero???

Should I have made a move on the flop if I believe I'm ahead to avoid this situation??

Thanks for any help on either hand... I'll post results later if people care... not important obviously though.