Painting the Sky
First I made a pattern of brilliant white, actually white mixed with some yellow to warm it up. Following my sketch and the photo, I added streaks of warm colors made with cadmium colors. I used the cobalt to cool down some areas. I worked with vertical strokes to keep all the edges VERY soft.
Using basically the same colors, but with more cobalt blue, I moved on down into the mountains. Since the sky was wet, I could easily work the shapes together, wet in wet, keeping those edges soft as well. The front mountain has more cadmium red in it to bring it forward. The entire painting should have a glow of red and orange when I am finished.