high quality, 8k, detailed, A cinematic portrait of a demonic nun, looking down upon the viewer with a chilling intensity. Harsh, bright ethereal green underlighting illuminates her pale, cracked face, casting eerie shadows that stretch upward, distorting her features. Her hollow eyes glow with malevolent power, accentuated by the unnatural green light that makes her skull- like face even more menacing. The viewer feels small under her cold, judging gaze. Her habit is tattered, yet perfectly symmetrical, framing her gaunt face in sharp black lines. The green underlighting flickers, giving the scene a ghostly, otherworldly feel. The background is shrouded in darkness, making her figure stand out vividly, while the grainy, old film effect adds a vintage 1980s horror movie aesthetic. The glowing green light gives the portrait an ethereal, almost supernatural aura, as if she’s a dark force that has come to life from the shadows of a forgotten crypt