Self-assessment is difficult because our minds play tricks on us. For more of the science of the dangers of self-assessment Google “Dunning-Kruger effect”.
There are several tactics students can employ to overcome or at least minimize the “Dunning-Kruger effect”.
Revised September 2022
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.