Create a breathtaking oil painting of a romantic autumn landscape featuring majestic mountains in the background, their peaks kissed by the warm hues of a sunset. The foreground is adorned with vibrant wildflowers in shades of orange, red, and yellow, contrasting beautifully with the deep greens of the surrounding forest. A cascading waterfall flows gracefully down the rocky terrain, its water glistening in the golden light. Fluffy clouds drift lazily across the sky, reflecting the sunset's colors, creating a serene and enchanting atmosphere. The scene captures the essence of tranquility and romance, inviting viewers to immerse themselves in the beauty of nature.