Show Character. When someone makes a play behind you, recognize it (nothing major, perhaps a pointing of the glove and a "nice job"). If someone makes a great play, really recognize it. Someone boots it, pick 'em up. A teammate crosses the plate, be sure to give him an attaboy. Pregame: do your thing in an energetic fashion. Postgame, regardless of the score or performance: carry yourself with dignity and respect for others.
You don't know who is watching, when they're watching, and from where they're watching.