This one is a bit cooler than the male.
I know it sounds like im being perverted, but the nude sketch in this one is very very accurate. The male was accurate as well, and very well done. The difference between this one and the male one is that it is a different, more abstract pose. Its like the art of the human body. The face needs more detail of course, but other than that its really cool. Try focusing on every detail and you can create a spectacular sketch. Although, i kind of like it without detail. Its very surreal and makes your own unique style.
Damn. This is cool, please make more outside of studying :)