Team leads and other store management, what do you look for in an employee that wants to get promoted?

So I’ve been working at Walmart for 4 years throughout college, and I graduated in December. Even while in school, I always liked the job, I just wished it paid more, and now that I’m looking at jobs in my degree field, I’ve realized that I honestly just want to stay at Walmart and work my way up the chain. I know that sounds stupid, but I genuinely like the people I work with and I like interacting with customers (yes, even the horrible ones). What should I be doing to show I have management material? My ultimate goal is to become a coach by next March. Also to hourly associates: what do you think makes someone worthy of promoting? I want to hear all sides of this.