Don't really follow her work, found this image in my folder of faces, (images I've gotten from the web and thought they might be a good shot to try and draw one day.) Didn't even know who she was, the jpg had the photographers name on it. Then a friend at work told me who she was. Her eyes in this picture is what did it for me.
Process: This was done in Corel Painter, using what I learned from the tutorial. I posted an animated gif so you can kinda see start with a sketch, rough in some color, use the blend tool to smooth out the colors then put your finishing touches. I was happy with this one but I think it still has a bit of a "Poster-Paint" look to it. I think my colors are too pure maybe.