What is a chinese teacher and how to become one

Thank you for reaching out to me. I just had some temporary teacher experience before as it was not too long term.
The student is a Spanish friend, now he has moved to live in China as a university teacher for teaching Spanish.
In the beginning, he was alike all the other beginners who felt interested in learning Chinese，but around his environment is very
hard to improve as expected in Granada without too many Chinese friends over there. We just had happened to touch on the ITALKI
one-language website and shared the basic information that I am glad to help him for how to learn basic Chinese tones and grammar
in my experience. Those problems always troubled most non-Chinese speakers. He gradually had some realization on
that Chinese is another language system with completely different thinking. Hence, memorizing each character written in
syssemantographic method enhances understanding like some original oracle drawings or sculptures on stones or bones.
He always pronounced simple words on WeChat or WhatsApp and let me incorrect those speaking.
In each word, it is not necessary to focus on the tone variants since they are existing distinguish problems in the first phase.
We are trying to use several synonyms to make up new expressions with the same meanings.
That could be recognized as one useful way to help out his understanding.
Not each one has the great endeavor or determination to keep on studying every week Chinese alike him, I have to say.
To start with the new topic for each time of communication in oral Chinese, and to dig out what interest he feels to learn
which is the key to improving the level of studying a foreign language.
After 2 years, I remembered he had passed HSK3 exams and then passed HSK4 after working in China for the next years.
That is the process of my teaching experience in brief description.
Hopefully, it is useful to you!