A masterpiece, in the style of the 1980s, with bold lines, dynamic strokes and rich textures, on background with a touch of nostalgia, perhaps with subtle drawings inspired by cellulose and vintage, worn textures similar to paper, oil painting, A haunting, highly detailed fantasy portrait of an undead knight mounted on a warhorse: a skull-faced rider with long flowing white hair, weathered full plate armor pitted with battle damage and rust, ornate gold medallions and filigree, a tarnished halo-like ring glowing faintly behind the skull, and a tattered deep-red banner whipping in the wind. The horse is armored with matching gold-trimmed barding, pale hide, and eerie glowing blue eyes. Moody, desaturated battlefield sky in green-gray tones, dramatic cinematic rim and volumetric lighting, strong contrast, painterly oil-brush texture, subtle grime and bloodstains, wind-blown movement, three-quarter low-angle composition, epic and ominous atmosphere, ultra-detailed facial bone structure and armor engravings, rich gold highlights, deep shadows, evocative, thematic focus on decay, honor, and menace. celshading, simple background
