If you visiting many companies performing many interviews but still didn't get select, so here are some tips which can help you to crack any interview. We have always heard that first impression is a last impression and it is also true. When you are going for any interview just make sure you put on proper formal dress not too tight not too loose just simple fit.
Now just be confident don't be nervous if interviewer noticed that you are nervous don't accept it instead tell him you are exited not nervous. Before going for interview just research about that company and analyze the job description you must be aware abut the post that you applied for specially read the task which comes under that specific post and tell interviewer how great you are in that task.
Prepare for all the questions which will be asked in the interview. Read carefully your resume and better be prepared for specific questions like Introduce yourself? Why did you apply in our company? Why should we hire you? where do you see your self in next five years? These are some inevitable questions which will be asked during an interview.