Candidates looking to improve their essay writing skills for the UPSC exam should focus on clear structure and clarity of thought. They should practice drafting essays on diverse topics, emphasizing developing strong introductions and conclusions. Incorporating relevant examples and case studies adds depth to arguments, making the essays more persuasive. Time management is crucial; candidates should practice writing essays within the stipulated time to simulate exam conditions. Additionally, seeking feedback from peers or mentors can identify areas for improvement, enabling candidates to refine their writing style and enhance overall effectiveness in conveying ideas.