This is a great exercise for testing one's ability to recall anatomical information in order to produce a believable figure. No references allowed! Just a pencil and a picture in your head. I've never been able to do it that well, but these recent drawings kind of surprised me. Sure, they're not perfect, and I admit the back pose has less than clear thinking, but overall I think this is a sign of all my recent hard work paying off. As they say... back to the drawing board! Give it a try. See how much you really know. You might just surprise yourself.