This was a very fun shoot. She was great at making the linen cloth look like it does in Baroque statues. Obviously she is holding the drape with one hand here, but it makes for a very Athena-like pose.
Learn how to draw, shade, and highlight drapery and clothing folds. There are many forms that make up a fold and many different types of folds to learn how to draw. The following tutorial is a great guide to folds...so book mark this page and come back to it when you need it.