I would say 1st present yourself professionally apply for the position with a neat an up to date Cover Letter and Resume. Second when you go in for your interview, dress professionally and make sure your hygiene is perfect (body, nails, hair and wear clean clothes). Do not chew gum. Last but not least come prepared to answer questions and ask question pertaining to the position you are applying (helpful to write down your questions ahead of time). Do not volunteer any personal information unless asked and you feel comfortable disclosing. This probably the most important do not be late! Send a little thank you note as soon as possible after your interview. I hope this is the answers you are looking for. Take care.