Send the corrections to your students whenever you find their mistakes. Send the corrections to your students whenever you find their mistakes.

This sentence is fine, too. How do you recommend sending the corrections? As text / chat messages while the student is speaking? Or as a written summary afterwards?

Send the corrections to your students whenever you find theirany mistakes. Send the corrections to your students whenever you find any mistakes.

Keep in mind that your students’ reason for booking your lessons is to practice (their) speaking, so all you should do is to ask them questions, listen to them and correct them. Keep in mind that your students’ reason for booking your lessons is to practice (their) speaking, so all you should do is to ask them questions, listen to them and correct them.

Keep in mind that the reason your students booking yourhave booked a lessons is to practice their speaking, so all you should do is to ask them questions, listen to them and correct them. Keep in mind that the reason your students have booked a lesson is to practice their speaking, so all you should do is to ask them questions, listen to them and correct them.

Keep in mind that your students are booking your lessons is to practice their speaking, so all you should do is to ask them questions, listen to them, and correct them. Keep in mind that your students are booking your lessons to practice their speaking, so all you should do is ask questions, listen, and correct them.

It was a bit wordy. We generally don't keep repeating the subject of the list ( Ask them questions, listen to them, and correct them). You just need the subject once usually at the end of the list. In this case, just use "them" once at the end so it's not as wordy.

The aforementioned description of how to be a good online English teacher is so simple, but it seems like many online English teachers don't know thatese things. The aforementioned description of how to be a good online English teacher is so simple, but it seems like many online English teachers don't know these things.

suggestion: The keys to being a good online English teacher are very simple, but it seems like many online English teachers don't know these things.

The aforementioned tips on how to be a good online English teacher is so simple, buyet it seems like many online English teachers don't knoware not aware of thatem. The aforementioned tips on how to be a good online English teacher is so simple, yet it seems like many online English teachers are not aware of them.

They simply speak too much. They simply speak too much.

How can a personto be a good online English teacher? How to be a good online English teacher?

I am not an online English teacher, and I am just an ordinary English learner. I am not an online English teacher, I am just an ordinary English learner.

I am not an online English teacher, andrather I am just an ordinary English learner. I am not an online English teacher, rather I am just an ordinary English learner.

But from my experience as an English learner, I can tell you howshare with you some tips to be a good online English teacher. But from my experience as an English learner, I can share with you some tips to be a good online English teacher.

Most online English learners just want to practice (their) speaking, because they can practice (their) reading, listening and writing (by) themselves. Most online English learners just want to practice (their) speaking, because they can practice (their) reading, listening and writing (by) themselves.

“Their” isn’t wrong, but the sentence will sound more natural without “their.”

Most online English learners just want to practice their speaking, because they can practice their reading, listening and writing themselves. Most online English learners just want to practice speaking, because they can practice reading, listening and writing themselves.

Speak clearly and slowly and make sure that your teaching equipment is of good quality. Speak clearly and slowly and make sure that your teaching equipment is of good quality.

This sentence is fine, but I’m not sure what you mean by “teaching” equipment. Maybe their audio/visual equipment (microphone, speakers/headphones & camera)? Or do you mean they should have a tablet on which to write/draw things in order to illustrate points for the student?

Speak clearly and slowly and make sure that your teachingaudio and video equipment isare of good quality. Speak clearly and slowly and make sure that your audio and video equipment are of good quality.

Never speak too much, and try to makencourage your students to speak as much as possible. Never speak too much, and try to encourage your students to speak as much as possible.