Hand shake beginning and end. Be keen but not desperate. Be yourself and relax but dont put your feet up on the table. Do some research about the company you are interviewing for so that you can impress when they ask you what you know about them already. Try to be in the mind set that they want you and not the other way around if you can.
Smile and think about your answer before you blurt it out. Dont be afraid to ask them to repeat the question but dont repeat that question too often
. I cant stress enough that you need to be yourself as much as possible. This will encourage you to be more relaxed and you will come across better.
One golden rule to remember. Never and i mean NEVER interrupt them no matter how keen you are.
. a lot of interviewers will make most of their mind up in the first 10 seconds of the interview.
Most importantly, if you dont get the job, dont let it get you down. Dont be afraid to contact them for feedback and use it to your advantage as experience for the next one.
Good luck!!