The latest draft is definitely zeroing in it more, I think. How tall are those mountains though? Also take care your lighting doesn't get too flat with the mist in the sky. It's a nice element, that fog, but it could mess up your lighting is all. I see there are some small breaks in it, so perhaps that will be enough, or you can increase the break-up if needed. I would avoid use of multiple light sources to compensate, if possible.