Advice for a Standout Application

Hi there!

I am interested in attending BU and was wondering what would make an application "stand out" from others. I have no clue what makes an application stand out and would like advice!

Here are a few current stats:

Leadership:

I am the Vice-President for Student Council, President for our school's National Beta Club, and a House Prefict for our school's house system

Clubs:

I am a member of our school's Model UN club and a chair for our WHO Committee, I am captain of our Math Team, and I also play viola

Internships/Volunteering/Research:

I volunteer 4 hours a week at our local hospital and intern 7 hours a day during the summer, 5 days a week at a local doctor's office; I am also currently helping a professor at a local state college write a research paper on applied mathematics

Academics:

I have a 3.9 GPA (weighted) and am taking 1 AP course (AP Calculus BC), which is the only AP course our school offers; I am also taking 5 dual enrollment classes this year

I am wondering what would add an extra 'punch' to my application and make it stand out from the rest