A body like that takes a lot of hard work. Proper eating, proper lifting, and cardio.
You don't get a body like that by doing things half-heartedly or w/out a lot of time, effort, and knowledge.
Edited to add, that at your age, you're not likely to get a body like that. You're still developing muscle. It'll take you a while to grow into that kind of shape.
And BTW, you really really really really really need to get over this whole low bodyfat thing. I mean really. Like enough already. You're becoming obsessive about something that is the last thing you need to be focusing on right now.
Look, the truth is if you want to look like that, then you're going to have to accept the reality that your body is still developing and growing. You fuck it up now and you will NEVER be able to look like that. You want to fuck it up so badly that you never get there? Keep obsessing about body fat and stunting your growth by trying to achieve something that you are physically not capable of achieving right now.
Got it?