I think the hardest thing about learning to instruct riding (or anything) is that in the beginning you don’t yet have a pocket full of tips and tricks to pull out for every circumstance and skill. The more you teach, watch others teach, read, and take lessons yourself, the more you’ll add to that back pocket. Here is a good page of teaching tips to add to yours!
Note: This is not professional advice, this is a blog. I am not liable for what you do with or how you use this information. The activities explained in this blog may not be fit for every rider, riding instructor, or riding center depending on their current condition and resources. Use your best personal judgement!