Thanks for all your kind words!
Ok, here is the all-cloud version.
Planets surface is disabled, all you see is atmosphere (and the tree object of course.)
It really looks a bit water-colour-like.
What I tried to do was more like surrealism, Magritte for example.
Anyway, it works more or less.

I am not that content with it though, it looks just like a simple tg-landscape made of simple tg clouds- that´s what it is.
If I could get some of the grandeur of the really sophisticated cloudscapes into an interesting groundbased scene, that would be something. Maybe I have to look into the shared clouds thread.
@ njeneb: do you mean the tree model or the cloud idea when you say interesting?
I tried to make a model that looks quite different from different sides to be useful in populations, but didn´t use it that way yet.
Problems with the leaves.
Best regards,
Jan