I like the first image quite a lot. You've picked a hard subject to light well. I have been having good luck adjusting the enviro light for the atmosphere lower, then increasing the camera exposure settings higher. When this is done correctly, the foreground will be illuminated properly.
The 2nd image is just cool looking. Nice work. Try a smaller wave size in the water shader. (I sometimes used a couple of landmark objects at a known distance apart to judge the size I like.)
