Don’t lose a job to a poor first impression. It may seem like it goes without saying, but we still see candidates who look great on paper and forfeit the chance to land a job because of these simple mistakes.

Showing up late or too early: Showing up more than 10 minutes early can create a poor first impression. It makes the candidate appear desperate or like they can’t tell time.
Forgetting that appearance still counts: You should look like you will fit into the work environment. It is better to overdress than underdress. If you show up wearing a sweater to an interview for a corporate position, you are conveying that you don’t take the position seriously or that you are immature. Dress well; if it’s cold outside and you don’t have an overcoat, leave your ski parka in the car. Carry a portfolio instead of a folder.
Assuming the interviewer will have your resume: Of course you e-mailed your resume to the hiring manager – that’s how you landed an interview. Always carry extra copies of your resume; you never know if multiple people will interview you. Not having a copy of your resume shows that you are unprepared.