First hand, please evaluate my play

[young nut]

first hand of SNG.

20+2 on stars, blinds still at 10/20.

I'm in BB with K [img]/images/graemlins/spade.gif[/img] 8 [img]/images/graemlins/heart.gif[/img]

UTG limps, all folds to Button who limps. SB completes, I check.

Flop80) 2 [img]/images/graemlins/spade.gif[/img] 3 [img]/images/graemlins/spade.gif[/img] 4 [img]/images/graemlins/spade.gif[/img]

I check, UTG bets 40, Button calls 40, SB folds, I call 40.

Turn200) K [img]/images/graemlins/diamond.gif[/img]

I bet 140, UTG Folds, Button Calls.

River480) 6 [img]/images/graemlins/heart.gif[/img]

I bet 200, Button raises to 800, I fold.

Comments, thought?