I just listened to this after your monster kid audition and again... wow. Your voice also fits Alphys quite well. This is actually the first time, even when trying to be picky, can't actually find any areas that need improving. My advice is similar to your monster kid audition. Keep practising and sing a variety of songs in that voice (even if that voice doesn't go with some genres) just to widen your range. To answer your question, you're allowed to audition twice each character if you wish. Another promising audition. Well done