classical portrait 3d model

portrait of an older man with a narrow and gaunt face, high receding hairline, thin short brown hair at the sides, sunken cheeks and prominent cheekbones, light brown uneven beard with subtle gray tones, weary and introspective expression, subtle tension around the eyes, head slightly turned in three-quarter profile, wearing a dark high-collared garment with a gold chain, warm muted skin tones, subdued lighting, warm brown textured background, classical oil painting style