Make sure you are dressed appropriately.
Your wardrobe is a sign of your professionalism and is sometimes used to gauge your level of experience and competence. When your coworkers and customers look at you, they should immediately feel comfortable working with you. So, dress as casually or formally as is appropriate, in a professional style for this line of work, a dark suit and conservative necktie for a man--jacket and modest skirt for a woman--is good, even if you will work in a uniform or blue jeans. You can show them that you do look good when you should.
- Show up a little early with have everything you need (30 minutes is good) to not be late, dashing about, rumpled and possibly breathless and upset. Carry a nice portfolio/expanding folder, containing loose leaf paper and extra copies of your resume. Make sure to also bring a couple of pens and pencils so that you can jot down notes. Be prepared with a pen and paper, if you're asked for one.