I'll agree with the others here, I like #1, the definitive halves of the image really appeal to me, the dark side gives that sense of unknown...the more I look at it the more I like it
I also like #3, however I think more room on the LHS is required for it feels a bit squashed in teh frame, if that makes sense...also moving around the
model to teh left a fraction more would have given the lighted part of teh body more curvature and I suspect more appealing.
The shadow in the final one needs to have more shape imo, teh concept and execution are good but need that shadow to be really interestign to hold my view!
on a side note 121 views on this thread, i might put nsfw on some of my landscapes
cmon ppl, there are some good portrait people out there with knowledge to share.