Intricate hyper-realistic 4k portrait of a woman with flowing blond hair, adorned in a lavish Venetian carnival setting, her enigmatic gaze peering through an exquisitely detailed fox mask. The oil painting captures the opulence and mystery of her attire, with elaborate patterns and textures reflecting the shimmering hues of the carnival atmosphere. The ambient lighting highlights the refined details, creating an almost lifelike presence, as if she might step out of the frame at any moment.