Second, you have to have your own works. Have an independent website, or have some works on some forums, or some videos of performances. If you write your own textbooks and print them into books, you can easily get most of the music, understand all kinds of music styles and be modest, so that you can retain students' capital when enrolling students.
The third is enrollment, mainly by means of the senior high school entrance examination and college entrance examination, and distributing leaflets to local schools. Leaflets should be as exquisite and personalized as possible, and don't be stingy with money. When the school distributes it, you will find that many people are also distributing guitar enrollment leaflets. Many times, students choose whose leaflets are more attractive.
Fourth, no matter how many students attend classes normally, even if one day no one comes, don't leave early and establish a relationship of mutual trust. Making friends with students will make your piano lessons last forever.
That's all. Enrollment is really not easy. There are many guitar classes in every city, but fewer and fewer people learn guitar in this era. If you want piano lessons to last forever, you must constantly improve your level, make friends with students and make them really admire you.
To tell the truth, if you really want to start a guitar class to make a living, it is not a long-term solution. We should consider the transformation in advance and improve ourselves in teaching. In addition, it should have been aimed at cultivating students, not making money. If one or two students really go this way, it will be worthwhile.