How do you feel about teaching your second instrument, or any additional instruments?
We all feel that our first instrument is our strongest point; however, I have found that teaching my second and third instruments has helped me relate to my students easier. When learning a new instrument, in particular one that is not similar to my first instrument, the learning process that I go through myself helps me understand how my students might approach learning.
Piano is my first instrument, after which I learnt to play the accordion. Some years later, I picked up the guitar and ukulele. I thoroughly enjoyed playing all of these different instruments and, in addition to these, I have tried out different percussion and tuned percussion instruments.
Exploring a different instrument can really broaden your approach to music and facilitate a good teacher-student relationship.