Hyper-realistic ultra detailed 4k portrait of a woman at the Venetian Carnival, featuring an intricately decorated fox mask that glistens under the radiant lights. Her dazzling blond hair cascades elegantly around her shoulders, capturing the essence of refined grace. The oil painting technique brings out the rich textures and vibrant colors, highlighting the exquisite details of her ornate costume and the subtle play of light and shadow across her serene expression. Her eyes, visible through the mask, convey a sense of mystery and allure, as they reflect the captivating ambiance of the festivities around her.