Ties and suits are not required, but you should dress conservatively and be well-groomed. Act with respect in and around the courthouse. Jurors may often see you at lunch or on the road going home. Thou shall be comfortable. Don't be afraid to look the jury or judge in the eye and tell your story.
Jurors are naturally sympathetic to witnesses.
They want to hear what you have to say. Remember, no one can cross you up or make you look bad when you listen closely to the question and tell the truth. Thou shall be a good listener . Take your time and listen closely to each question. Be sure you understand the question fully before you answer.