Very sweet clouds Dan. Realistic coloring and clouds cover. Although I think in the last shot the clouds are more (better) defined. I like to see the edges of the clouds. It might be a personal opinion but I think they look better (and more realistic) that way.
They look very promising and I'd like to see more on a variety of weather themes!
I'm not too sure about your water reflection. When you're done with your clouds you might want to look into that too
