character sheet prompt character reference sheet, facial expression sheet, 5x5 grid, 25 panels, evenly divided grid, consistent panel size, clean layout, close-up portrait, head and shoulders, same character in every panel, consistent face, consistent hairstyle, consistent hair color, consistent eye color, consistent skin tone, consistent facial proportions, consistent art style, consistent lighting, plain white background, no text, no labels, (row 1: front view, neutral expression), (front view, gentle smile), (front view, angry expression), (front view, sad expression), (front view, surprised expression), (row 2: three-quarter view facing left, neutral expression), (three-quarter view facing right, neutral expression), (three-quarter view facing left, smiling), (three-quarter view facing right, angry), (three-quarter view facing left, sad), (row 3: left profile, neutral expression), (right profile, neutral expression), (left profile, slight smile), (right profile, mouth open), (side view, looking backward over shoulder), (row 4: high angle, looking up at camera), (high angle, looking downward), (low angle, looking down at camera), (low angle, looking upward), (top-down view, head tilted up), (row 5: extreme three-quarter view, looking over shoulder), (face tilted left, neutral expression), (face tilted right, neutral expression), (chin raised, looking down at viewer), (chin lowered, looking up at viewer),