Your narration voice comes across as quite natural, and your pronunciation of PTDs is good. However, there's some consistency in the length of pauses, which can make the delivery sound a bit monotonous. Try to vary the duration of pauses and consider adding conversational fillers like "uh" or "um" to make it sound more natural and engaging. Don't forget to maintain a friendly tone and keep the conversation flowing smoothly. It's great that you left the mistakes in; it shows your willingness to improve. Keep working on making your delivery more conversational and dynamic.