Sorry I don't have a lighting setup but I can tell you how to keep those ground shadows. First,import a background picture, I usually use a simple white blank image. Then, after posing your character the way you would like antialias your document, this will smooth out the edges. Paste this to the background and the shadow will now have become part of the background. Finally, render the image(make sure to turn off shadows) and then you should have a fully redered figure but with a shadow at its feet!