A terrifying nun with an unholy presence, exuding a creepy and haunting aura, stands in a dark, eerie setting. Her ghastly features are enhanced by intricate details and an elaborate design that sends shivers down the spine. The scene is bathed in moody, atmospheric lighting reminiscent of classic horror photography, capturing her ghoul-like essence. The image is rendered with photorealistic precision and cinematic flair, showcasing every eerie element in stunning 8k resolution with a vertical aspect ratio of 9:16.