Portret tryout

When passing a random billboard i wondered if the "wind-in-hair" effect would be hard to shoot. Ilse thought it wouldn't, and graciously agreed to play model for some tryouts... Ofcourse, to add to the whole ambiance, i forced her to wear some makeup :)


Technical yabbayabba
I like the hair effect, and the background i got works reasonably well.
But i really don't like the light in this shot. The shadows from her hair aren't too bad, although they shouldn't be there, but the shadow under the face is really annoying. No remote flash yet, so i bounced the flash off of the ceiling, also sporting an omnibounce.
Any tips on how i should have fixed the lights with current gear (580ex mounted on the body), and what i may want to obtain (umbrellas? remote flash?) to get better lighting in shots like this?