[TexasSP]

Get a good nights sleep, eat breakfast, brush your teeth after eating, dress nicely but don't over do it, be confident, have a little 30 second commercial about yourself (nothing outlandish, just straight and to the point), don't BS the interviewer, remember you are trying to sell a product (you) to the interviewer, make sure your product stands out, always smile, have a good firm handshake (not limp, but no he-man stuff either), thank the interviewer at the end, make sure and ask about the hiring process (such as how long until a decision and/or what is the next step), a follow up phone call in the next few days is always a good thing too, even if you get voicemail it shows you're interested.