What makes you a good leader?

Not being a Prima donna by thinking you are the star of the show. "People first, Mission always." Putting ego aside and actually showing your subordinates that they are of value.

Mentoring, guiding, setting the example, delegating, then trusting your subordinates to do the tasks assigned.

I don’t think rank structure or titles = good leaders. There are people that promote or are placed in leadership positions that aren’t the best leaders.
I’ve seen an E4 lead better than an E8... the quality she possessed was willingness to learn, work, and share her experience. Good leaders build up other leaders. They provide opportunity to encourage growth. Good leaders listen and are not quick to judge or make decisions.