We first determined the style for the post-production -- fresh and clean. So we suggest that you crop out the areas that can express this style. Turn the horizon at the bottom of the mountain into a middle line across the frame. The balanced relationship between the size of the mountain, sky, and ground makes the work quieter; meanwhile, keep the depressed part of the mountain to reveal the sky and clouds, giving the picture some breathing space; in terms of color, adding a bit of gray scale to blue, green, yellow, and blue can achieve harmony and unity.