Please don't hurt your voice doing these homework submissions or any kind of voice-over! It's normal to feel strain, but if there is pain, rest your voice as much as possible. Okay, your performance was nice here! My recommendation for you is to keep up your energy. It was great! I do think you could have smiled more or used your body to make it sound like a more NATURAL kind of high-energy, but that comes with practice. Keep practicing your clarity and articulation in your words as well. Good work!