Show some enthusiasm, smile, show your employer that you are interested and eager to learn. Always look your employer in the eyes. Sit straight up position and don't be afraid to ask questions pertaining the position available for you. Be a people person. Be polite, and let them feel like you can do the job. Have enough confidence in yourself. Don't be doubtful, and think the the job is too hard for you to handle. And last but not least, have a stern hand shake to conclude your future opportunity with the company.