Undergraduate / I'm working on an admissions Essay to University of Florida [2]

I'm currently working on it. I need some advice. I've written a rough draft but it's not complete enough to post. Here's a basic rundown.

Essay Topic
In the space provided, please write a concise narrative in which you describe a meaningful event, experience or accomplishment in your life and how it will affect your college experience or your contribution to the UF campus community. You may want to reflect on your family, your school or community activities, or your involvement in areas outside of school.

My essay is about a time I was at a youth leadership conference, where I performed a song in front of a large audience. It's about me overcoming hesitation and anxiety to get the job done and enjoy it, as well as not being afraid to try new things.

I'll be updating this with the essay once it's complete enough, but I'd like to know if starting off the introduction with a quote is a bad idea, as well as IF I should do so.

I'm looking at Shakespears quote
"Be not afraid of greatness; some are born great, some achieve greatness, and others have greatness thrust upon them."
Mainly concerning having greatness thrust upon you, as me performing the song was a volunteered effort to give our skit some substance.

Could you help me?

Thanks.