Avoid human bodies, clear facial details, solid objects, hard lines, low-quality renderings, cartoonish styles, bright and flat lighting, and any elements that make the face look too solid or not made entirely of smoke. Exclude overly sharp features, unnatural colors, excessive noise, and anything that detracts from the realism and dramatic effect of the smoke face. No modern objects, symbols, or elements that break the ethereal and surreal atmosphere. Avoid completely dark images and monochromatic tones.