Prompt: instaport style, an old man 70-80 years old, gray-haired, angry, wise, the portrait is painted in oil on canvas, detailed face, large detailed eyes, masterpiece, expert, insanely detailed, John William Waterhouse, John Singer Sargent, Agnes Cecile, Charlie Bowater, visible brush strokes, Vivid color scheme, character study, sharp focus.
Negative prompt: out of frame, duplicate, watermark, signature, text, ugly, morbid, mutated, deformed, blurry, bad anatomy, bad proportions, cloned face, disfigured, fused fingers, fused limbs, too many fingers, long neck