1.When shaking hands in the job interview, the applicant should extend hand first. 

The applicant should focus on the topic with necessary eye contact when talking to an interviewer. 

The applicant should use body language as much as possible in the job interview. 

The applicant should ask and answer questions concisely in the job interview.

 Waiting for the result patiently after the interview. 

If you fail for the interview, you should thank for the call, and express that you would appreciate if there is a second chance.