Candidates can work on articulation skills to improve their performance in UPSC interviews by engaging in a few targeted practices. Regularly participating in mock interviews can help candidates become familiar with the interview format and improve their speaking confidence. Additionally, practicing structured responses to common interview questions enhances clarity and coherence. Candidates should also focus on articulating their thoughts succinctly and engagingly, which involves extensive reading and reflective thinking on current affairs. Lastly, seeking feedback from mentors and peers can further refine their communication abilities, essential for success in UPSC interviews.