turning my hand into a bluff?

[kaby]

50nl ipoker 6max

vill is 18/2/.5 17% wtsd after couple of hundred hands

if it matters my image is like 28/24/4 laggy capable of making bluffs etc, don't know if vill is aware of this though

48$ eff stacks

4 handed atm

CO folds
Hero raises K[img]/images/graemlins/heart.gif[/img]9[img]/images/graemlins/heart.gif[/img] OTB to 2$
SB calls
BB folds

Flop (4$) is Q[img]/images/graemlins/heart.gif[/img]8[img]/images/graemlins/club.gif[/img]3[img]/images/graemlins/club.gif[/img]

SB check/calls my 3.75$ cbet (pbb bit too much but meh)

Turn (11.5$) is 9[img]/images/graemlins/spade.gif[/img]

SB checks
Hero bets 8$ (I might get called by worse hands, I might fold out TT-JJ, Qx, I charge draws) ?
SB calls

River (27$) is A[img]/images/graemlins/diamond.gif[/img]

SB checks, Hero really really wants to bet like 20$.