How Does Daily Pronunciation Practice Help You Improve Your English?

I started with you one year ago and I have three months of practice. And my friend said, what are you doing? You're so native. I don't some native. I just practice. So can you tell me a bit more about how that helped you? At the beginning, it's weird. I practice it at home. And I practice enough low voice. Just no one notes it. And then I start practicing it in my my car, my way home on his way to work. But my time was really stuck because I have to give the presentation recorded or something like that. The second presentation was much fluent. He says he has your knowledge when needed most.