Sirens

Ok it is a beautiful composition, a very bright imagination, and a nice fantasy scheme.
Please allow me a couple of unoffending comments.
Firstly, I disagree with the comment that its hard to believe that this is photomanipulation.When I innitially saw the picture,what came to my mind was: "a nice photo manipulation"
And secondly, whilst you have done a pretty good job with light manipulation in this comp, however using plugins such vertus fluid mask or on one Mask Pro will bring a lot more substance to the cutout. Particularly the hair areas.
And finally, (I know I said a couple) If you have a look at the feet of the forefront model, you will notice that the hard straight croping area.I know you like photoshops tricks, so bluring that wit a very wide brush on its own layer would get rid of that sharp crisp cut.
Please do take my comment as a positive critique! i do like your work, thats why I spent some time browsing them