Improving effective communication skills for UPSC aspirants involves consistent practice and targeted techniques. Candidates should engage in regular reading and writing exercises to refine their articulation of thoughts and ideas. Participating in mock interviews and group discussions bolsters verbal communication and helps in receiving constructive feedback. Additionally, practicing public speaking can boost confidence and clarity. Working on non-verbal communication, such as body language and eye contact, is also important. Lastly, learning to listen actively enhances interactions, ensuring candidates can respond appropriately during interviews and discussions.