<https://s.mj.run/BiXpYLb4KYU> Generate a coloring book-style image of a wizard with a jewel on top of his staff and he is casting magic from one of his hands from this reference with simple black and white lines. The image should be suitable for children to color in. Please keep the design simple and avoid complex details. Generate the image with an aspect ratio suitable for an 8.5 inch by 11 inch print. --ar 2:3  --s 250