If you’re even considering teaching, yet you’re telling yourself that you’re not “good enough”, then you’re just holding yourself back. And that means you should go for it.
We should always be growing in one way or another. Like, some of the most technically-dazzling pianists I know can’t improvise. Which is a shame, because it’s like being unable to speak a language unless it’s scripted.
There’s always something new to grow with and you don’t have to do it through a new degree or diploma. There are online courses that you can do at your own pace in topics like business.
The big idea is, if you’re even asking if you’re good enough to teach, then you are probably good enough. The question is whether you’re ready to teach.
When you’re a total beginner and you have no business teaching anyone anything, then you’ll be so focussed on doing that you won’t even think about teaching.
So you’ll know, when you start wondering if you should teach, is when you should be teaching.
The point where you’re “too good” and you don’t grow anymore is where you’ll fall off the tracks.