[angarg12]

Practices. It's a skill, you get better at doing it by doing it.

However don't just drone through interviews. Do deliberate practice. Be mindful and participate fully in the process. After the fact reflect on your performance. What did you do well, what could you improve? The first few times will be super awkward. After 30 interviews you will feel more confident. After a 100 it will feel like second nature. Sounds like a lot of work? of course! that's what it takes to become good.

This might be overkill though so apply judiciously. Still, if you feel the need to improve, going through the process with a handful of companies should improve your skills significantly.