Anita - your sky & clouds look so natural. Do you remember what color you used for your sky? I have tried some cloud brushes, but mine never look as good as yours. Kudos!

Thanks PJ, John, Linda and Carol. Linda, I used Selective Color to put color in the white sky. I clicked on Selective Color, and then clicked on the Whites. Then I used the settings, +20 cyan, +8 Magenta and +10 black. I then used a mask so the color only affected the sky.
Carol, I put a blank layer above the sky layer(with the clouds). I then painted the underside of the clouds with black and a 5% opacity. Then I blurred that layer until it looked right.
Thanks again for your comments.

Anita

Thanks for the detailed instructions. I will try your technique and see what I can manage. With all that attention to detail, it's no WONDER it looks so magnificent. Very, very nice.