The inspiartion for this piece came from my previous work with medical illustrations under antique photos and from the work of the late Susan Seddon Boulet. Susan often encorporated imagery within her figures. You can view some of her work at http://www.tendreams.org/boulet.htm . Amazon also has several great books on her work.
This piece is available in my Etsy shop. http://sarahogren.etsy.com