The flower itself is gorgeous and how you have it placed in the water is breath taking. The reflection in the water and upon the surface is amazing and detailed. The random drops of water spread around the flower gives your eyes something else to look at rather than just the main subject.
However, the one thing I didn't seem to like was the color. It isn't vibrant or eye piercing. Perhaps it is merely the lighting and the way it is curved. I am glad though, that you can see the transparency of the petals on the top, that is a wonderful thing to see. The transparency, oddly enough, give it more color. But sadly at the bottom when the petals hit the water, it loses the color. Perhaps that is the effect you were going for, in which if it is, bravo.
You really did use the negative space around the flower to good use. Lovely. Very lovely.