Character reference card, full-length figure centered on a plain white seamless background, neutral stance facing camera, even soft studio light, clean readable silhouette, textured skin and fabric (not airbrushed). Style: 2D Hand-drawn. CHARACTER СЕСТРА: Slim adult mermaid, upper body above the waves reaching the ship's rail, round face, short-cropped silver hair, thin arms, long violet fish tail, holds a sparkling crystal vial. Fixed colours: pale seafoam skin, violet tail, silver crystal vial accent. 2D hand-drawn, clean medium ink outlines, flat cel fills with two-tone shading, light paper grain.. Everyone depicted is an adult. No text, no watermark.
