The footage to gather

  1. The instrument setup
  2. A short phrase slowly
  3. The phrase at a comfortable pace

Give each moment a little breathing room. Get close enough to show the detail, and keep the original clips handy.

Plan a phone-footage edit

Opening

Choose one scene from your camera roll and remove unrelated takes.

Middle

Trim repeated attempts, retain useful original sound and use a close view only when it clarifies an action.

Ending

Return to the completed result.

Review it for music teachers

Keep the example achievable and use music you have permission to publish.

Ask yourself: Can the viewer follow the scene on a small screen without extra explanation?

Watch it as if you were seeing it for the first time. If something is unclear, try a different cut or add the missing shot.