That went pretty well, didn't it.
You recall that the qualification to be an expert in court is quite simple: an expert is someone who, by reason of training or experience, has knowledge that would be useful to the court in making a decision. You do not need to have an specific certificate, or even be the most knowledgeable witness on a topic, to be qualified as an expert.
The next step of your testimony is the direct examination. The attorney who called you to court will ask you questions. The best strategy is to answer them.
What do you do next?
"Objection? Well you can object to this!”
“I’m so sorry. Did I say something wrong?”