Semi-realistic portrait painting of a dark fantasy sorceress, half-body portrait

Semi-realistic portrait painting of a dark fantasy sorceress, half-body portrait, pale luminous skin, void-black eyes with subtle reflections, long silver hair with ash-gray streaks, sinister half-smile, sharp elegant facial features, refined clean brushwork, smooth blended paint, controlled edges, minimal visible brush texture, tattered black robes, candlelit ancient library, dramatic chiaroscuro lighting, soft shadows, moody atmosphere, realistic proportions --ar 3:4 --v 8