"Exclude blurry details, oversaturated colors, cartoonish or overly simplistic styles, visible wires or mechanical parts in excess, chaotic or cluttered backgrounds, exaggerated proportions, unrealistic lighting, medieval or fantasy elements, daytime settings, smiling or overly expressive faces, and any sense of humor or whimsy. Avoid low-resolution textures, lack of detail in the skyline, and overly bright or cheerful moods."