Before you go hog wild with sculpting you might find it worthwhile to really double check the proportions thoroughly. To do that you can export model from zbrush and do a quick rig (or just pose manually using soft-select) and put her into various poses. Check those out from many angles wherever you'll do the final render.…
Randomly came across this about 20 min ago and thought it was pretty neat, i'm curious how this will progress in the future. http://stephaneginier.com/sculptgl/
http://www.theregister.co.uk/2005/07/20/crazy_frog_battered/ Finally something about that guy you're going to enjoy, I quote: Or maybe you'll enjoy this more?