I made these new clouds a little while, thanks for the feedback I have just received from you!

I'll do more edits based in your feedback 
Wow, i actually got your concept completely wrong, you're doing a horizon from the ground!
My bad.
And the clouds got a really good improvement, nice!
~edit~
So here are my 2 cents, maybe you're trying to take a picture from your idea in a way too large scale, keeping it smaller and tight will make things to come together more easily.
Also, im not quite sure what you're trying to achieve with that gradient, are those mountains? Is that the sky? Anyways, heres what im trying to say:
