Create a mesmerizing Impressionistic watercolor painting of a serene lakeside landscape at dawn. The soft, pastel hues of the sky reflect gently on the tranquil water, while a lone swan glides gracefully across the surface. Lush green trees line the shore, their leaves rustling in the cool morning breeze. A mist hangs low over the water, adding a sense of mystery and tranquility to the scene. The overall mood is peaceful and ethereal, capturing the beauty of the natural world in a dreamlike way.