Painting Showcasing a Tranquil Mountain Scene

Design a painting showcasing a tranquil mountain scene using deep blue and emerald green hues. The composition should be panoramic, highlighting the expansive width of the setting. Include towering pine trees prominently in the foreground, a pristine lake mirroring the jagged mountain peaks, and a vivid sunset transitioning from orange to purple in the sky. Display the artwork in a hand-painted style with visible brushstroke textures, formatted as a rectangular image.