There are many websites that offer advice, case studies, and best practices for marketing campaigns. But the only true way to test what works with a target audience is to test different options live and see what happens. This is the data-driven approach to marketing touted by many marketing specialists and often implemented by high-growth companies to rapidly test simultaneous ideas.
Next, place the fill light at a 45-degree angle on the other side and lift it close to or just above eye level. The purpose of the fill is to soften the shadows created by the key, but without getting rid of them completely. Therefore, the fill should be dimmer than the key light. If you have to use the same type of light for both, scoot the fill back and diffuse it by clipping a clear shower curtain onto the clamp light with clothes pins.