Interviews can be won or lost in the first five minutes. If you appear to be confident and enthusiastic from the outset, your answers are more likely to be reviewed positively, as people's perception of information is coloured by the feelings they have towards you. It is useful to have a strong opening line prepared. When saying your name, try to halve the pace and double the volume to ensure that the interviewer is able to hear how to pronounce it. This will make you both feel more comfortable.
Have your own intelligent questions prepared before the interview, as in many cases, interviewers will give you time to ask questions or make further comments at the end of the interviewer. If you have any important things to add about your suitability, do it here
Have a closing statement prepared (e.g. Thank you for your time, it was a pleasure to meet you) so that you leave a confident and enthusiastic impression with the interviewer.