This is a most excellent shot! The way the lighting is set up gives an impression of ethereal softness, which is what I love about this image. The simplicity of the background accents this ethereal quality that I speak of.
The bird is off-center, which is more pleasing to the eye. The perspective is also ideal.
Now on to negatives. Like someone said below, the picture is a bit blurry, but it is not dramatic, and might also add to the dreamlike image. It is really only annoying in the bottom left corner, where it almost looks like your finger was on the lens.
Overall, this is a fantastic, dramatic image, but it still needs a few tweaks before it becomes perfection.