[SPWAR]

You can use some of these images for reference:
http://www.exrx.net/Graphics/image3.gif
http://www.equilibriarte.org/members...023073.jpg.jpg
http://j.b5z.net/i/u/2060765/i/female_figure.jpg
http://www.zbrushcentral.com/zbc/att...chmentid=15935

And this simple sculpture should be helpful at the beginning:
http://www.findgreatstuff.com/pics/nude_shy_chalk.jpg