Best ways I can improve my resume for my first finance/accounting co-op? (I'm a NEU student)

Hi!

I’m a rising undergraduate sophomore at Northeastern University. At NEU, we are required to go on co-op, essentially applying for and working a 6-month fulltime job. I plan to do 3 of them before graduating. I am on the Fall co-op cycle, which means I begin my co-op next July 2018 and it lasts until December 2018. I begin the application and interviewing process in the Spring 2018 Semester. I wish to land a solid co-op at well-known financial institutions such as Wellington Management.

What could I do until 2018 Spring to add to my resume?

I’m not looking for suggestions like joining a club or doing a summer internship (which I am on currently). What I’m looking for are any well-known leadership programs, any relevant events, skills I can learn on my own, anything really that could help… I browsed through Deloitte and PwC’s leadership programs but their programs are only offered to specific schools and had to be applied through my campus site which I couldn’t find.

Any help?