Wrong betting?

[absorensen]

What should i god damn do to here - am i betting wrong to eliminate the other players?

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

Preflop: Hero is MP1 with Q[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/club.gif[/img]. CO posts a blind of $1.
UTG folds, UTG+1 folds, <font color="#CC3333">Hero raises</font>, MP2 folds, CO (poster) calls, Button calls, SB folds, BB folds.

Flop: (7.50 SB) 5[img]/images/graemlins/club.gif[/img], T[img]/images/graemlins/spade.gif[/img], K[img]/images/graemlins/diamond.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO calls, Button calls.

Turn: (5.25 BB) 5[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(3 players)</font>
<font color="#CC3333">Hero bets</font>, CO folds, Button calls.

River: (7.25 BB) 4[img]/images/graemlins/heart.gif[/img] <font color="#0000FF">(2 players)</font>
<font color="#CC3333">Hero bets</font>, <font color="#CC3333">Button raises</font>, Hero calls.

Final Pot: 11.25 BB

I just want to know if my betting could be improved to protect my hand.