Being evaluated was part of getting my Diploma in Teaching English as foreign language to overseas students (RSA). The most important part was LESSON PLAN. You have to choose careful which skill(s) you intend to practice and then use or design some activities. You should decide on the time you�re going to spend on each activity and your aim. Don�t forget to include warm up. Pre (reading, writing, listening, speaking) as well as Post activities are essential and helpful in many ways. Keep in mind the level and the age of your students.