Yeah I think you are right. There are so much techniques to improve your own business. I found one for myself. It's email signatures . I've read an article that having an email signature can increase my brand awareness, gives a professional look to my emails, so I can have higher response rate. So I decided to find a site that can make signatures and I found one
https://newoldstamp.com/solutions/email-signature-for-teachers/ Try it for yourself too.