It is difficult to improve if we don't know how we sound. Try this. Use your phone to record yourself, listen back on ear buds or headphones. Watch the score as you do. What do you hear?
Question of the week:
Do you know the meaning of all the text in your pieces? Example, Allegro? These words give us direction on the interpretation of the music.
You've got to learn your instrument. Then, you practice, practice, practice. And then, when you finally get up there on the bandstand, forget all that and just wail.
I'm a professional pianist and music educator in West Toronto Ontario. I'm also a devoted percussionist and drum teacher.