7. Do not eat, drink or smoke: During the interview session it is advisable for you to avoid smoking, chewing gum or food, or drinking beverages. So what if  you are not in front of the interviewer,  if the interviewer gets a little hint that you are smoking , drinking or eating,  he or she might think that you are not serious about the job that you are interviewing for and can reject you from bagging the offer.

8. Demonstrate your manners: It is advisable for you to show the hiring manager that you have good etiquettes, therefore, demonstrate your manners to him by expressing your thanks and appreciation for the interview opportunity. By revealing your manners you are sure to impress the interviewer, as it is the first priority of the interviewers to select the candidates with good conduct.