She stands before a dark midnight sky, her long, black dress draping elegantly down to the ground. The left side of the dress has a dramatic, slitted opening that is fastened together with a small white bow. Her hair is done up in a high ponytail, topping off with another small, white bow. Her face is stark and pale, her purple eyes captivating and mysterious. Her right hand delicately holds a small, black fan.
For coloring suggestions, try to keep within the same dark theme that is presented in the image. Shades of blues and purples would be a beautiful contrast against the black dress, while similarly toned shades of purple and gray can be used to create a moonlit sky. For a finishing touch, consider highlighting the white bows with a hint of silver or gold.