Candidates can improve their speaking skills for the UPSC interview by engaging in regular practice and self-assessment. Participating in mock interviews can simulate actual conditions, exposing candidates to common questions and feedback on their responses. Recording practice sessions helps in evaluating body language and clarity. Reading widely and discussing diverse topics enhances knowledge and articulation. Furthermore, joining discussion groups or speaking clubs can provide a platform to refine communication skills in a supportive environment, boosting confidence before the final interview.