here's another piece, had a lot fun with it!
the reference .. meagan good .. http://www.datzhott.com/wp-content/uploads/2009/04/meagan-good.jpg
done using photoshop cs3 .. took me nine hours ... hard edged brush ...
tools that i used .. eraser, smudge tool (most important for waves,wisps,swirls) .. dodge and burn tool ... lots and lots of transparency layers for color blends
hope you like it :)