16 May News Top Tips for Being a Great Expert Witness Expert Witness, 17. Maintaining your professional edge, Communication, legal system, testimony Expert witnesses are essential in legal proceedings, offering specialized knowledge to assist in court cases. To excel as an expert witness, it is crucial to be prepared, objective, and communicate clearly. Confidence and the ability to remain calm under pressure are also key attributes. By following these tips, expert witnesses can enhance their effectiveness and credibility in the legal system.