In order to maintain security in the pits, to prevent theft, allow early & late access to the venue, and many other things, RoboGames requires all contestants to wear badges. These badges must have a usable, easily recognizable photo of each contestant. If you do not have a valid photo in the registration system, you will not be given a badge, and as such, not allowed to compete.
Perfect. White background, tight cropping around face, 300 pixels wide by 375 high (resized here for clarity - click here for full image to use as reference.)
Good start, but needs to be tightly cropped to just head and shoulders and to have proper aspect ratio (300:375 = 1:1.25)
Bad - Don't do any of these: