If you need a nice headshot, I created this prompt and I used it in ChatGPT. Key: use a clear, well-lit headshot for reference. And feel free to change clothing, jewelry and backdrop to better suit you.
Use the reference photo as a facial reference. Preserve subject’s exact facial identity, proportions, symmetry, pores, skin texture, natural glow, eye reflections, and realistic expression. Professional woman wearing a structured black turtleneck and gold hoop earrings, standing against a smooth charcoal gray backdrop, soft half-smile with confident gaze directly into camera, high-contrast lighting from left for sculptural highlights, classic editorial aesthetic, composed at slight ¾ angle, captured at f/2.5 using a 105mm lens.
Here is image it produced for me