What is the best way to achieve a professional-looking portrait using a 2 light setup?

To achieve a professional-looking portrait using a 2 light setup, position one light as the main light source to illuminate the subject's face evenly and create a flattering look. Use the second light as a fill light to reduce shadows and add depth to the portrait. Adjust the intensity and angle of the lights to achieve the desired lighting effect, and consider using modifiers like softboxes or umbrellas to soften the light and create a more pleasing portrait. Experiment with different lighting setups and settings to find the best combination for your specific portrait.