Every studio has different requirements. Some large chain painting education institutions will require a teacher qualification certificate or certain teaching experience.
Generally, there is no requirement for the teacher qualification certificate in the studio, but everyone pays more attention to experience, so it is best to say that you have the experience of studio assistant, and the pass rate will be higher.
Many training institutions will ask you to do a five-to ten-minute course when you go for an interview, so you'd better make some preparations before you go.
When listening to the course, you must speak loudly, because the children's attention is not very concentrated, so the teachers in the training institutions will turn up the volume when talking to them and communicate with them.
As long as you try the language and express it well, there is basically no problem.
I hope my answer can help you ~