To hone effective communication in UPSC interview practice, candidates should engage in regular mock interviews, focusing on clarity and conciseness. Seeking feedback from peers or mentors can reveal areas for improvement in speech delivery and body language. Practicing with different types of questions can also enhance adaptability during interviews. Moreover, using recording tools to review performance allows candidates to identify strengths and weaknesses. Consistent practice can build confidence, ensuring that aspirants communicate their thoughts effectively under pressure.