To improve their answer writing for UPSC exams, candidates can adopt several strategies. First, maintaining clarity and conciseness is crucial; each answer should directly address the question within a specified word limit. Practicing structured writing, including an introduction, body, and conclusion, helps organize thoughts effectively. Regularly writing and reviewing answers can identify recurring mistakes and areas for improvement. Additionally, referring to high-quality answers from previous years or peer reviews can provide insights into the expectations of examiners. Finally, focusing on important keywords and facts can enhance the relevance and impact of answers.