This looks cool in the flythrough, but the clouds are WAY too smooth / blurry, they look very unnatural. When you look at real clouds, they don’t look like that, they have a certain sharpness and texture to it.
I could imagine this to fit with some comic style / heavily stylized game, but not with anything going for realism.
Also, will the clouds change the color depending on the lighting of the scene? The bright clouds on the pitch black sky looks wrong.
No offence, just some constructive criticism. Am looking forward to what the final version looks like.