This probably won't help you directly, but maybe other readers. I don't believe in having a checklist of want you need to get accepted to the academies. It's not a traditional university; which in my opinion, is just a continuation of where you left off in high school.
The military, which means the academies, are a way of life. Whether it's for 4,5, or 20 years. As such, you have to look first at your existing way of life. You look at who you are, where you came from, where you want to go, and decide which path is best for you. If the military and/or academies is part of that way of life, then pursue it.
The military wants leaders. Do all the things you want to. Clubs, sports, volunteering, etc. in these activities, demonstrate leadership. If you aren't the leader type, then the military probably isn't for you. If you're naturally the leader type, then you'll have no problem assuming leadership roles in these activities. Same with teamwork. The military wants team players. If you're a team player, you'll have no problem being involved in team activities. If you're not a team player type of person, then the military isn't for you. The academies are top tier academic institutions. If you're top tier in academics, then you'll have no problem taking AP or IB type classes. If you're not into those types of classes, then the military academies probably isn't right for you.
The point is, if you have to do, study, participate, lead, etc. something because it's something that is need to get an academy appointment, but it's not something you would normally do otherwise, then maybe the academy isn't the right place. The way it should work is..... You ask, what are the academies looking for in an applicant and cadet? You're told, the academies are looking for individuals who are leaders, team players, volunteers, puts others before themselves, academic overachievers, wants to serve their community and country, wants to be part of something much bigger than themselves, knows that they have to start at the very bottom and work their way up, etc. you then look at yourself and your way of life, and you either say.... That's me. Or, maybe that's not me.
So, to vaguely answer your question, if the academies seem right for you, then simply do MORE of what you're already doing. Do more in your sports. Take on more leadership roles. Do more volunteering. Do higher levels of academics. Be part of more teams. (Not just sports, but teams in clubs and activities). If you do more of what you are already doing, and it happens to be what the academy is looking for, then you'll be fine with your application. Best of luck.