What a beautiful sky, so serene. I love the captures of the colors in the waters also. only thing that bugs me just a bit is the airplane stream in the upper left, but its not totally distracting.
I personally hate the lines made by airplanes so if this were my shot I would have tried to clone that out. But that's just my preference. I like the photo overall, especially the whispy clouds and the reflection in the water.
Use of Light:2
Focus:1
Composition:1
Creativity:1
Achieves Challenge:2
Nice use of HDR to bring out the clouds and allow the foreground to 'get some light'. I would have actually wanted a little more foreground illumination if possible.