If you are doing the painting in a program that supports layers, don't forget to create a duplicate layer of your finished hair painting, to make a 'cast shadows' layer. You may have to adjust the shadows to 'fit' the curves of the body, but it does add that extra bit of realism to the pic.

RosemaryR
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"This...this is magnificent!"
"Oh, yeah. Ooooo. Aaaaah. That's how it starts.
Then, later, there's ...running. And....screaming."