Cave Of The Cyrstal Knee-monchers. :P
In terms of postitioning and composition this looks super good, however one thing kinda stands out to me. (Keeping in mind I'm no expert on anatomy or anything, or what style you're goin' for...) Her legs just seem a wee-bit too long in relation to her torso and head.
Other than that, this is a fine piece you got going on here.
Keep it up! :D