Again, this might sound rather fundamental, but be on time. Don’t be too early.
If you find yourself arriving well ahead of the appointment time, go and find something to do – have a coffee, go for a short walk, don’t just sit in the reception and look lost. Likewise, if circumstances force you to be late, let the interviewer know. They can adjust for this if necessary and situations do arise that we can’t avoid, but manage the situation if it occurs.

This is all part of making a positive first impression. You get one chance, so make the most of it! Be friendly and smile. Make eye contact. Have a firm handshake.