Hey Rich2, I DO like that.  The clouds especially.  They don't have the quality and realism of, say, the stuff I've seen out of nvseal - or at least, I don't know how good they would look with a closer shot.  But that almost makes them better.  They fit your world.
oK, so I got a little distracted from my original focus with the polar ice cap things....  But I've played around with them a bit, and I have a couple that semi please me.  I wanted to post (low quality; 2.5 detail, AA 3) pictures of each pole, with and without ice, as well as a better quality closeup of one pole.  Maybe you guys could provide suggestions on how to make them more realistic.  Especially the pole that is mostly water.  I don't need anything super-fancy at the moment, since my main focus still IS geological features, aka mountains.