Are you aiming to emulate a specific medium or style with this?
It would be nice if the end result winds up looking like an oil painting.
Two more questions:
Do you care to give us any insight on how you textured the background?
Is the face a likeness of anyone or did you just make her up?
The background is a combination of a photograph of some clouds and a stock overlay texture derived from a concrete wall, vines, roses and a few other things.
As for the face, I didn't set out to imitate anyone in particular but there's probably a fair amount of Sandra Bullock in there, a little Tia Carerre, some Salli Richardson-Whitfield and probably others.