UPSC aspirants can improve their writing speed and efficiency by practicing time-bound answer writing. Setting a timer during practice sessions helps simulate exam conditions, leading to better time management. Additionally, organizing thoughts through structured outlines before writing can enhance coherence and reduce time spent on revisions. Regularly practicing different types of essays and focusing on clarity and conciseness in expression also aids in refining writing skills. This combination of practiced speed and structured thinking can significantly enhance performance in the writing-intensive segments of the exam.