Show case your skills
Interviewers look for a reason for hiring you; so learn to showcase your skills and abilities. You must be sure that you are relating your skills to the interviewer's question or to a topic referred to by the interviewer.
Your achievement
Think about an accomplishment you are proud of. Stick it in a file and take it to the interview. For example it can be a very difficult report you had managed to get at the last moment and you got kudos for your accomplishment. If your interviewer asks you how would you handle deadlines, take the opportunity to say you would like to work under pressure and constraints; pull out your file to back up your statement. Don't forget to leave a copy of it with the interviewer.
Recapitulation
Try to recollect what has happened in the interview and find out whether you have stumbled over some questions. Note them down and think how better you could have performed. Write those answers and mull over them till you get them right.
Think about missed opportunities
Though you prepared well for the interview, you might have forgotten to tell the interviewers something important. It is never too late to shine. Try to write down a sentence or two in your post-interview-thank-you letter about what you had forgotten to tell the hiring manager. You can mention about your accomplishment. Say something like this: "My managers praised me for helping my colleagues to hit the deadline" Or "I was the computer expert on the floor and my colleagues usually turn to me for help."
"Do you have any questions about the job?"
When this question is put to you, you take the opportunity to get more information about the company. You can also use the opportunity to sell yourself. Try to include references to your skills in your question about the job. Raising such questions that you want growth and will also be an asset to the firm.
