I want to open commissions but I don't know how much I should price my work (o_ _) I really need some suggestions

Your art is beautiful you should think how much time you spend working. And you should also think how much money you need to make your life easier. If you need X$ to live a month then what about doing X / working days / working hours / how much time you need to spend to achieve a type of commission. Each artist has their prices. You need to find how much time you need to make your work. Don't be afraid to make mistakes because you can adjust and modify it later while you learn ☺️