Choose one thing to improve
Name the part that needs attention before you begin: dealing without losing place, speaking a clear instruction, placing a prop naturally, or finishing without an awkward pause. Repeating the whole effect can hide the precise point that causes trouble. Work at a comfortable pace and stop if your hands are getting sore or tired. A brief focused session with one observation is easier to use tomorrow than a long session whose only conclusion is that the trick sometimes works.
Separate handling from presentation
First learn the method from its legitimate instructions, then practise the words alongside it. Saying the script aloud reveals phrases that looked elegant on paper but are difficult to deliver while your hands are busy. Write a clear instruction for each audience action. Do not practise only the secret part and assume the rest will appear on the night. Think about where your eyes are, what the audience is meant to notice and how you will acknowledge a response.
Watch from the audience position
A mirror or recording can help you inspect timing and visibility, but neither guarantees that every live viewing angle will work. Put the camera where a spectator would be rather than directly above your hands unless that is the intended view. Check the table edge and the height at which you hold props. If recording another person, get their agreement first. Keep the review specific: one unclear instruction or one unnecessary movement is a useful next task; a vague verdict that you looked awkward is not.
Write the next rehearsal, not a grade
End with a note about what improved and what still needs checking. Include preparation and reset so you do not accidentally practise a version that cannot be repeated in your setting. Rehearse a calm stop or restart if something goes wrong. Our downloadable notes sheet is deliberately simple: effect, setup, audience instruction, difficult moment and next step. It is a record, not a certification of readiness. Return to a manageable routine until the whole presentation feels comfortable.