There's not a lot about a face that has deal breaker potential, IMO. Unless you're toothless, deformed, or VERY genetically disadvantaged (I'm talking, like, inbred or something), your face will at worst just not be an asset. Just be well-groomed and do what you can to look your best, and pretty much any face can be acceptable, if not attractive. One of the hottest girls I ever dated had kind of a busted face, and I honestly didn't even notice until a few dates in. She had an awesome body, a good haircut, and knew how to use makeup.