Single majestic unicorn silhouette, rearing up on hind legs against a fiery watercolor sunset sky, horn emanating brilliant light like a beacon, background an impressionistic blend of bold reds, oranges, pinks, and purples using wet-on-wet and blotting techniques, delicate watercolor splatters creating celestial starry effect, strong sihlouette inky black contrasted with luminous aura around horn, surreal fantasy atmosphere