One thing I know about interviews is that answers should come from your heart, from your relaxed tone, from your posture while giving eye contact, not "prepared" answers before hand. I've done interviews to others (at work) and I can smell someone who memorized an answer before they even start speaking, you can see these things from their posture, their tone, the way their eyes "subconsciously" shift around to try to recall a memorized answer lol.
When they ask you a question, answer it comfortably to the best of YOUR KNOWLEDGE, don't try to impress the people by over complicating or over talking.... Just be honest, and have fun, these people are interviewing you because they LIKE you, give them a reason to like you even more 🙂
Good luck