This mysterious woman is creating a potion of some sort in her cauldron while casting spells. She is surrounded by various objects such as bones, glass bottles and talismans that hint at her mysterious and powerful craft. Her intense gaze is full of concentration as she works on her mysterious concoction. To capture her mysterious and powerful presence, you could color the woman in darker hues such as deep purples, blues and blacks. Her hair could be a range of oranges and auburns, with the items surrounding her accented with brighter colors like greens and yellows. For the cauldron and its contents, use a dark, smoky gray with wisps of orange for a smokey, magical effect.