Reply To: Teaching outside of your specialty area
From my experience as well as from what I have gathered from my host teacher, I think a lot of these skills come with time. You are also probably a lot better than you think! I started off my teaching knowing next to nothing about strings but as time went on, I have gotten much better at it. Enough to the point where I can help those who need it if they have questions.
Depending on the age group you are working with, your talent as a musician will get you places. You might not be as good as a singer as someone who has sung there entire life up to high school but you are still a musician and can help them learn and improve, which is really the entire point of teaching.
TL;DR. I think a lot of these skills will come in time but don’t sell yourself short!