Seems obvious, doesn’t it? But you’d be surprised how many people get this wrong. First the name. If your name is David but prefer to be called Dave or even Steve (for some odd reason), put the latter on your card, not the former. A business card isn’t meant to provide your genealogical information but introduce you to people who may be interested in talking to you. Introduce yourself as you like to be called to avoid awkward re-introductions later.