Best practices for public speaking in UPSC interviews include maintaining eye contact, using clear articulation, and displaying confidence. Practicing answers out loud helps in refining delivery and reducing anxiety. Understanding the nuances of body language can enhance engagement, while ensuring pauses can give the audience time to absorb information. Tailoring responses to reflect knowledge and insight significantly strengthens communication. Mock interviews with feedback sessions allow aspirants to refine their responses continually. Additionally, structuring answers logically ensures comprehensive coverage of topics, allowing aspirants to convey their thoughts effectively during interviews.