In the Oxford dictionary, it states that a leitmotif is:
‘a recurrent theme throughout a musical or literary composition, associated with a particular person, idea, or situation’.
That's right, you have to compose a leitmotif that is associated with you. You only have to play it, not notate it, but there are some examples bellow.
Rubric coming very soon...
For now, here is here is Princess Leia's leitmotif:
and here is Obi Wan Kenobi's leitmotif: