Take a moment to think and construct your answers to questions before rushing into a vague and senseless reply. Interviewers will carefully watch and listen to your communication skills. Lack of confidence and poise. However, preparation to handle the interview will come across as confidence in your ability to handle the job. Too much concern about rapid advancement.
Few people are able to jump automatically to the top of the ladder.
Let the interviewer know that you are willing to learn the business from the ground up. Lack of long-term commitment. An employer will not waste his time with you unless you convince him that the position in question is THE ONE that you want to make was your career. Lack of interest in the company or products. They tend to narrow your perspective and could easily keep you from performing to your fullest potential in the position.