To start, I think you did a great job photographing the snake. With a very dark background, a subject strongly lit and reflections from the water this was a very difficult situation.

One of the general rules in photography is not to place the subject in the dead center of the frame. For this shot I see the snake moving from right to left. Ideally and under most circumstances you want to leave more room in the frame ahead of the animal or in its perceived direction of motion.

I moved the snake over slightly and cropped off some of the foreground.
Basically, the same suggestion of not placing the focal point of the photo in the center of the frame. Giving more room ahead of the snake and less behind.


Adjusted some of the blown-out areas to tone them down a bit. This brought out a little more detain in the snake.