Answer:
Dress appropriately
The first thing that the interviewer will see is how you look or how you are dressed up.
This will show them if you relate or if you will fit in that position or not.
So the way you dress must impress them before you can even sit down and talk to them.
Positive attitude
When you get in the room the interviewer will sense the attitude that you bring so it is good to great them with a smile and keep up a positive attitude throughout the interview.
Be prepared
You must make sure that you prepare in advance and do the thoroughly research about the company so that when you are questioned with specifics questions you don't find yourself mumbling.
Ignorance is never an excuse so you it is very advisable to come fully prepared.
You must know about the company in order to speak confidently in questions related to how you can fit in their company.
Use appropriate and formal langauge
You have to look and sound professional in an interview.
You can not use the langauge that you use when talking to your friends .
Don't come chewing something
It would be disrespectful to keep chewing while talking to the interviewer so whatever you need to eat must be eaten way before coming to the interview room.
Appropriate manners are very important to show professionalism.
Step-by-step explanation: