While having expertise to share is important, being an expert witness also requires the ability to talk and explain your knowledge base and opinions in a clear manner to people from diverse educational backgrounds. As one example, I was an expert witness for the Department of Justice in the case noted below.
United States Federal Court, Northern District of Texas
Case 3:15-cr-496; United States vs. USPLabs, LLC, et al.
See 2019 WL 499101
Qualified as an expert in pharmacognosy