black swan

the scene is very interesting, i love the background lighting a lot and the tree is also wonderful.
as the lighting comes slightly from the left i would say the shadow of the swan should go a little bit more to the right, where you put the shadow you could instead put a reflection of the swan (in the case its a reflection and not a shadow then it should be a little sharper as reflections are usually more detailed).
the scarf looking thing she is holding should have a darker shadow where her arm is resting.
also the lighting on the right side of the horizon looks odd as it looks different to the one on the left, it almost looks like the right side is glowing and it fades away the horizon line, having a straight horizon usually improves the overall quality of an image.

i have to say those are minor stuff i noticed by taking a deep look at the image. so i still think this is magnificent and it deserves a perfect rating.

keep up the good work.