Here is the painting with the reference photo and my glasses for a size comparison.
Step 1: I begin to put big areas of underlying color in the foreground and midground.
Step 2: The second layer of more detail is added to the garden bed of plants and the rock formations.
Step 3: Another layer of color and details to the spruce tree and midground trees and bushes.
Step 4: The mountain range is masked and the sky put in. The sky is three layers of color.
Step 5: The sky is toned down some, more clouds added. Hard edges in the sky were removed. The mountain range is begun with two layers of green.
