Create an exquisite painting of an adorable fox sitting majestically on top of a cliff, gazing out at a beautiful sky. The artwork should be highly detailed, suitable for a Pixiv contest winner, with the style leaning towards furry art. The fox should have soft, expressive features, capturing its charming personality. The sky is vibrant and full of color, enhancing the serene atmosphere. The painting should be rendered in ultra-high resolution, Octa 8K, with the aesthetic of a 'portrait of a cartoon animal' that could win an art contest on Behance.