This pose was inspired by the pin-up art tradition. In particular, I used the pose in the link below as a starting point. The drawing is modern but was inspired by the photos of classic model Bettie Page.
http://www.thepinupfiles.com/images/KBS-JohnHul-THEPOSE-BettiePage-LG.jpg
This won an honourable mention in the RA club "Faces and Figures" competition, March 2006