Okay a little advice. You probably already know but it is good to remember. Put the camera in a sturdy place and let it roll. If you hold it is going to look shaky. Make sure is in a well lighted area and if they person is a legal resident make sure to have tissue paper and make-up power , otherwise the faces are going to look oily. You can take a couple of minutes of visual video after the interview, that is, hands, shadows, shoes ect. Do not worry, they are convined during editing. Make questions in advance that require more than a yes or a no. Fox example how did enter the united states, what are your goals for the future, why do you love the United States ect. make only 2-5 questions and let them talk. I know this sounds cumbersome but it help the video to look good and sharp. we want this to look emotive but sophisticated.