This model is originally made and published by CLIP/Celsys - I have just edited the proportions using the sliders to adjust the body to be more of a feminine anime-type body.
This is the main model that I use when sketching out my anime girlies, so I figured it might be useful for other people so you don't have to heavily adjust all the sliders yourself. :3
Use as you normally would use any other 3D model.

I prefer using this body shape, since I'm often drawing relatively petite anime characters. I tweak the elbows, chest, and knees in my sketch.