"In the style of John William Waterhouse", Create an image featuring a whimsical scene of alienation. The central character is a melancholic, middle-aged, red-haired woman with an ornate, silver prosthetic arm. She is dressed in a vintage pilot's uniform and holds a bouquet of mechanical flowers. The setting is a floating city above a neon-lit, stormy ocean. The city features towering, futuristic skyscrapers intertwined with massive, ancient trees. The overall art style should be surrealism, capturing the whimsical and alienated mood of the scene."