This is just lovely. It will make an awesome print. The composition is very good, but I think what makes this one stand out is the lighting and the reflections. The darkness and the reflections work perfectly to draw the attention to the blooms. Nice sharp focus.
The effect in this photo is very interesting, by the subjects aren't. I think this would benefit from a better angle where the balance of color and contrast is more even.
Stunning image. The reflections are perfect. I could wish for a bit more room at the bottom though. I'm assuming there were some distracting elements you were avoiding.
Nice backlighting. Love the composition, too. Two things I would've tried to do (considering this was an advanced editing challenge) would be to clone out the light area right at the top, and also either not crop so tightly at the bottom (since the reflection is such an integral part of the image), or, if you have to crop tightly to get other distracting stuff out of the way, maybe some cloning there, too. Having said all that, of course, I don't know what the surroundings looked like so all of these suggestions may be impossible. They are just impressions of what would have improved this particular photo from my point of view.