I apologize for the delay in responding, and thank you for posting. Good headshots are an actor's most important marketing tool. When choosing a photographer, look at their portfolio for natural, well-lit photos that look like real people, and ask local actors and acting teachers who they recommend.
For acting headshots, your eyes should be in sharp focus with a simple background, and the photo should look like you on your best day. Our Acting forum is a good place to ask for recommendations in your area.