The first step when you are being evlauted is not to get nervous. Plan ahead of time and come to school prepared. Make sure that you have copies of everything including your paperwork, lesson plans, unit plans, and the work sheets that the sutdents will use(if applicable) to give to the evaluator. Have pens and pencils ready for the evaluator and a place for them to sit where they can see you interact with the students. Finally, don't rush through the lesson. Just pretend that it is a normal day and that the evaluator isn't even there.