People say that, "Your first impression is the last impression you make". Well, yes it's a fact of professional world. Most people don't know how to avoid small mistakes at the interview and later they just find themselves with regrets of losing the opportunity. Here are the mistakes that one should avoid on the day of your interview.
Confidence is the best dress one can wear anywhere but over confidence can make you look like nothing but a decorated empty head. Try to avoid bragging about what you have done and make efforts to convince the person what you are capable of.