This image has good sharpness, exposure, and head angle and I like the reflection of the bird as well as all the colors and patterns in the water. For my taste, the bird is too centered in the frame. You might crop a little off the top or bottom to change the comp a bit.
You nailed the exposure and sharpness and detail are right one. Since the water is prettier on top, I'd probably crop some off of the bottom, as per Steve's suggestion. I'm guessing you could have gone lower some and still get a reflection. It is a delicate balance between low angle and reflections :)
Quite loverly and well done as above. I agree that a small crop from the bottom would make it a bit stronger.
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