Hi. I was reading various topics on this board as a guest and I joined specifically to address this topic.
DO NOT become hung up on pitching velocity!
While pitching velocity is important, it is by no means what will make you a successful pitcher.
Sure, throwing the ball by people is a great feeling, but as you get older, things will even out and opposing hitters will catch up. I can tell you from personal experience that velocity alone will not allow you to compete to your full potential. Knowing
how to pitch will take you much farther.
Any good hitter can hit a fastball down the middle. Getting hitters out is about upsetting their timing. Control is key. You have to be able to throw the ball where you want to. Having an idea of
where to throw the ball at any given time when facing a hitter and being able to deliver the ball there, will greatly improve your chances of success.
A combination of proper conditioning and a continued effort to learn more about the game will take you far. The fact that you're taking the time to seek out knowledge here is an indication that you're headed in the right direction.
Relax and have fun. As you mature and develop, the rest will take care of itself.
Good luck.