Q: How often do you get new Headshots? – Joshua Powell
A: When you no longer look like the old ones. Or if there is a marked change in the style of what’s being used. For instance, there was a time when a photo might have included more of your body. That was when casting directors looked at actual 8x10s that were forwarded to their office. These days they look at a computer screen of thumbnails, a wallpaper of faces. Your face needs to fill the shot. If you include too much of your body, your face will be the size of a pea. Just make sure you have good pictures, professionally shot that accurately represent who you are. Try not to go overboard by overspending on a super fancy photographer. Remember: the headshot is just the jab you throw to get their attention. The knock out punch is your audition.
Some more tips on getting great headshots:
http://www.headshot-photos.com/tips.php
http://www.organicheadshots.com/tips.html