Guidelines for writing effective answers in the UPSC Mains include clarity, conciseness, and relevance. Begin by understanding the question thoroughly to address all components. A structured format with a clear introduction, body, and conclusion enhances readability. Use bullet points where appropriate to emphasize key ideas. Quotations from relevant sources can substantiate arguments but should not overwhelm the answer. It’s essential to incorporate examples, particularly from current affairs and case studies, to support analyses. Finally, practice writing within the time limit to improve efficiency and ensure well-thought-out responses during the actual exam.