I would hold my support for couple years. Being an admin on JB is far more different than being an admin on normal CS servers. JB tests your patience, skill, understanding of commands and rules. It highly tests your nerve system. For someone your age, I do not recommend such stress which JB can give you. You lose most of the gameplay and you have to be fair to everyone no matter friend or not. You are still very young and I am not saying no support or support since I don't know how you actually are in JB, but what I do now, it is not just being an admin with its rank and cool stuff you can do. Admins have many rules and have to strictly obey them. It is a responsibility you need to build yourself up to before you can actually deal with it.
If I ever see you playing I will give you more personal feedback, but as what I said also reflects on the rule 16 age minimum to be an admin. Everyone well know that we do exceptions, but that doesn't mean you need to try to be that exception. I am sure even if someone didn't apply for admin, but was impressive he would be asked if he ever wanted to be an admin. That's how I would chose people. So good luck.
P.S.
To all no supports and supports. This is how you actually give feedback. You put some thinking into it than only say in few short words why you support them or not.