

One of the worst things you can do in an interview is ramble on and on. Focus on keeping answers short, simple and to the point. You are there to be interviewed, not to show your ability to dominate a conversation.
When you do get the chance to speak, answer questions and talk be sure to show enthusiasm. Nothing says “I want a job” more than letting your actions speak louder than your words. Good eye contact and accurate listening skills will take you a long way in the eyes of the interviewer.
When giving examples about your past work and your history with other jobs, be sure to explain how successful you were and how much positive attention your work brought to the company. Be sure to provide information on your background that can be verified; this shows you're not making things up.
One of the most popular questions during an interview is when you're asked, “Tell me a little about yourself”. This is your opportunity to summarize who you are; this speech should be limited to 1 minute and should be well rehearsed. Focus on your overall experience, any special skills you have and your greatest personal attributes.