Score one question at a time - all at the same time
Give a good brief.
Ensure the student is clear of what is expected prior to the start of the task.
Check whether the student can hear you properly.
Test recording equipment before you begin.
Be clear about the type and volume of evidence that should be included in the portfolio. The more selective students can be, the easier it may be for the marker to identify where the strengths and areas for development are.
Build levels of autonomy as the programme develops. At first you may give students a lot of support in rehearsal or practice sessions. Later in their studies, it may be up to the students to organise their own rehearsal, practice or preparation elements.