1. Right at the moment you have decided to apply for a job, start striving your best to acquire as much knowledge as possible of the job and the organization.
2. Think, you have got the job, and what your status and responsibilities are going to be.
3. External appearance is a significant factor of one's personality, so wear a suitable costume. Let it be a suit, if you can afford.
4. Prepare yourself well, both by physique and mind.
5. Reach the venue sufficiently early.
6. Keep wearing a sustaining but natural smile on your face.
7. As you meet your fellow-interviews at the venue, introduce yourself to them and be gregarious with them but confine yourself within the bounds required.
8. Waiting out for your turn, accommodate yourself with all the paraphernalia concerned, i.e., the manners, way of addressing, language skills, exposition of qualities etc.
9. More importantly, you must be able to speak fluently and coherently with a neutral accent. Speaking fluently is not speaking fast, but speaking clearly and understandably, mind you.
10. As you are called in, walk straight, enter the hall or chamber, and wish the panel, good morning, good afternoon or good evening, depending on the time.
11. Wait for the panel to ask you to take your seat. Thank him/her/them and sit comfortably with confidence and courage in mind.
12. Understand, the way of answering (i.e., the approach) is more important than the answer itself.
13. Never can you afford to be overconfident or flippant.
14. Speak with an uninterrupted and spontaneous flow. present your profile comprehensively and your ambitions earnestly. Be infallible to the best of your possibility so far as the grammatical aspects are concerned.
15. When a question is asked, do not, at once, plunge into answering. Take a couple of seconds to start answering.
16. If asked how best you suit the position and the organization, speak in unequivocal terms, avoiding dubious constructions; never should you round self-conceited, mind you.
17. If you don't know the answers for a question, admit it frankly and say politely,” I have to know the answer from you sir(s)/madam/madams."
18. Keep looking straight at the interviewer(s)' face (best not stare) throughout the proceedings.
19. As soon as the proceedings are closed, thank the panel.
20. As you come out, reserve all your feelings and take leave of the venue as early as possible.