Read standards, application form and guidance notes. Watch the school's threshold video. I need a brief description of the way I teach. Based on concrete examples, not assertions. I should know how to access key pieces of supporting evidence but there is no need to collect them or attach them.
Bullet points are preferable to extended prose.
Remember to keep a photocopy. The three standards in this area are about showing consistent and effective performance in planning, in teaching and classroom management and in the use of assessment. They are about your teaching, not your pupils' learning. Need to choose two or three classes or subjects. Baseline information about prior attainment.