Who is your favourite idol (singer, actor, sportsman, musician, cartoonist, film director...)?
Why is (s)he so special to you ( qualities, talents)?
What would you do if you met him or her? ( meet: rencontrer / prétérit: met)
example: If I met my idol, I would take a photo of her/him
If + sujet + verbe au prétérit..., sujet + would + base verbale...