Teach your character how to draw.

Promt Formula:

Anime style scene. The character with {brief description (hair color, eye color)} stands near canvas holding a brush in her hand, other hand {is lowered/holding a palette}. There is an illustration of the {object} on the canvas.

Promt examples:

Anime style scene. The character with blue hair stands near canvas holding a brush in her hand, other hand is lowered. There is an illustration of the pikachu on the canvas.

For pencil art:

Anime style scene. The character with white hair and fox ears stands near canvas holding a pencil in her hand, other hand is lowered, she is looking at the camera and smiling. There is a pencil art of the burger on the canvas.

Edit the promt according to your character's appearance. You can experiment with the promt, but then the result may be unstable.