young female alchemist, extracting essence, Koschei's complex, fantasy setting, intricate apparatus, glass vials, glowing liquids, steam, medieval laboratory, ancient tomes, candlelight, focused expression, long wavy hair, leather apron, protective gloves, standing pose, 3/4 view, detailed textures, rich colors, ambient lighting, soft shadows, dynamic composition, magical atmosphere, alchemical symbols, mystical energy, vibrant effects, high detail, close-up on hands.