To ensure that the generated image does not include any unwanted elements, use the following negative prompts:

Background, scenery, landscapes (to avoid any background images)
Objects, props, animals (to ensure the focus is solely on the person's face)
Dark, blurry, pixelated (to avoid a low-quality image)
Action, motion, movement (to ensure the person is in a static position)
Multiple people, crowds, groups (to avoid any other people in the image)