Hi @İlyadaciiii , your first move is to enroll and consume the free courses Udemy have on course creation. After that what is your unique selling point, how is your course going to draw me in? What alternate ways of presenting your topic are you bringing to make you a go to pro? What literal and lateral steps have you taken to make your offering so compelling that it leaves the others looking amateurish?
Put your best course forward, I go by the motto “don’t shoot video that sucks”, never be concerned about binning your work if it isn’t right. Work to amaze people and bring them a unique experience.
Have fun and enjoy the process.
I would say the the first thing anyone thinking of becoming an instructor here should do is read all the documentation, policies, terms and conditions, etc. that are available, to understand how things work and what you can expect as an instructor. That is more important than event thinking about a course topic.
I have seen many cases of people that after spending months creating a course, find out (and complain) about how Udemy will sell their courses, or how they will be paid, or how students will rate their courses, etc.
Make sure you know what you are getting into and you understand exactly how things work, and only if you agree to that, then start thinking about specific aspects of course creation.