Check the interview feedback pages for the school where you are interviewing so that you can get a good idea of what questions might be asked. Write or type out your answers and have someone help you check your grammar so that they sound fluent. Then use those to practice from. When you practice, talk *out loud*...not just practicing it in your head. Maybe even find someone to ask you the questions so you can answer and have the pressure that you can't just start your answer over (like you might do when practicing by yourself). On your interview day, don't think about it too much and let your personality shine through...you will have practiced enough to get by just fine!