Once you have researched and found the right expert for your case, give them the best preparation you can. This includes:
1. Make sure your expert has all the materials necessary. While this can mean giving them more than they need, it can also prevent opposing counsel from saying that the expert did not review all the materials available.
2. Review your approach to the case with your expert so that he is comfortable with the facts and your arguments.
3. Prepare your expert by also anticipating and reviewing possible opposing arguments. This will enable your expert to give smooth and persuasive testimony.