I think a sketch of what you're trying to say would be perfectly acceptable but I don't know that I'd be too happy seeing someone take my render and do their own postwork on it, could you imagine how intimidating that would be for someone without as much experience or talent? 

And cobalt, I knew what you were trying to get across in your comment mostly because anytime I make something I can always see 15 or so other ways of doing it. It is nice though to hear someone else say what you can see in your mind but decided against for whatever reason.

Edit IMO I had thought because of the tilt of her head that having hair moving that way was acceptable... Just a thought :)