You could be a person who had already attended an interview or going to attend an interview or might be preparing for an interview. Despite the fact that everyone needs to be sound in knowledge both technically and general facts, but in addition to it there are certain inevitable processes that needs to be followed. Remember getting a job nowadays is like a turmoil between fate and hard work and once we get a job then it’s like we are in an elysian day. So, never miss the onetime opportunity, as they have another person other than you for job but you don’t have another company seeking you with readymade jobs.
As, it’s stated, body language, voice modulation, eye contact and importantly propriety is very important. You have to spruce and prim. You should never wear informal clothes, and in fact it is better you be foppish. Though you would have heard about many lectures about career guidance in your life, this seems plausible to you. So, keep your decorum and modesty intact and expatiate showing zeal for that job. All the best!