I want to open an art photography studio. Is it better to join someone else's shop or make your own brand?

It's not easy to open this shop. If it is a small workshop, it may still survive. Market research is essential. If you are a photographer, I suggest you put down your camera and concentrate on your own business, otherwise you will be distracted. You should remember that opening a shop is to make money, not as easy as you think. The most important thing for you is your management ability, not your photography skills.