A stunningly detailed, photo-realistic 4k portrait oil painting of a woman at the Venetian Carnival. She dons an intricately designed fox mask that shimmers with hints of gold and crimson. Her blonde hair cascades elegantly over her shoulders, catching the ambient light to reveal soft waves and subtle highlights. The background is a rich tapestry of blurred colors, echoing the enchanting atmosphere of the carnival. The woman's eyes, visible through the mask, are vivid and expressive, capturing a moment of mysterious allure. Her attire is adorned with delicate lace and pearls, adding layers of texture and depth to the painting.