Studio portrait lighting reference chart, 12 setups

Create a professional studio portrait lighting reference chart featuring the same young Asian model shown in 12 separate portrait panels arranged in a clean 3 column by 4 row grid. The model has short black center-parted hair, smooth natural skin, a neutral black crewneck top, and a calm front facing expression. Each panel shows the same face and pose but with a different lighting setup. Use a simple gray studio background and realistic photography style. Add clear white text labels at the bottom of each panel. Lighting setups to include: flat lighting, butterfly lighting, loop lighting, Rembrandt lighting, split lighting, rim light, ceiling bounce lighting, low angle lighting, top light, hairlight, backlight, background light. The image should look like a professional cinematography or photography lighting guide, with consistent framing, realistic shadows, natural skin texture, accurate facial highlights and clear comparison between each lighting style. Use soft studio portrait quality, sharp focus, high detail, and educational reference layout.