Portrait of Cthulhu, white glowing eyes, fantasy, extremely detailed, digital painting, artstation, concept art, smooth, sharp focus, illustration, stunning lighting, art by artgerm and greg rutkowski and alphonse mucha and simon stalenhag, realistic character concept, high fantasy, dark atmosphere, golden ratio, cinematic lighting, hyperdetailed, high resolution, insanely detailed and intricate, artstation, Marc Simonetti, Greg Rutkowski, 8k