Ultra-realistic portrait of a woman at the Venetian carnival, featuring intricate detailing and vibrant 4k quality. Her piercing blue eyes peer through an elaborately crafted fox mask, embellished with gold filigree and delicate feathers. Strands of her golden blond hair cascade around her shoulders, contrasting with the rich, textured fabric of her costume. The oil painting style captures the play of light and shadow on her expression, adding depth and lifelike vibrancy. The background suggests the lively atmosphere of the carnival, with blurred hints of ornate architecture and vivid colors, enhancing the ethereal and mysterious aura surrounding her presence.