Remember, you have a few seconds to make a really good first impression with your interviewer. Stand tall, shake hands firmly, smile, make eye contact and speak with confidence. When the questions start, take your time answering them - it's not a race. Being prepared with answers shows your interest and enthusiasm, while being prepared with questions demonstrates your knowledge and foresight. Prepare questions to ask the interviewer. Use these to demonstrate your knowledge of the company and its products and services. Ask specifically about how these things relate directly to the position.