amtrpt

Hi Aaron,
You have gotten some great advice so far in this forum. What I would suggest is that you really focus on two major things.

When we are young we tend to do whatever it takes to get the notes to happen, especially high notes. The problem is that can sometimes lead to bad habits in your playing that can be hard to break. Things like tension in your body, and or too much mouthpiece pressure. Try to always stay relaxed and patient. The high notes will get there if you give it time. I'm not sure if you are taking lessons, but if you aren't and you can I would try to get that going. A good teacher can help guide you away from bad habits.

The second thing I would suggest you do is learn how to really enjoy the music you are playing. Learn how to make beautiful phrases by listening to great recordings and try to copy them. At first they will be borrowed ideas, but in time you will develop your own style.

I hope this is helpful. Good luck and keep us posted on your progress.
Best,
Andrew