you have to more practice and make a friend who can speak in English face to face and share your problems with your friend and learn more

you can follow protocol for interview first of all you have to sit properly and confidently as like don't move your leg and hand and don't play with any object like pen, ring any other things and second one is tell your name, parents name, age, qualification, address, your aim, hobbies, likes and dislikes, your strength and weaknesses tell about your dream and reply to interviewer question that all close your interview