u/Fine_Selection9117

I have been thinking about selling my artwork (traditional art, paintings, plushies, etc.) for a while now but I don't where to start and whether I want to do this full time or part time.

I was thinking of selling my artwork on Facebook marketplace but I don't know if it's legal to sell my own artwork there.

I first want to know if a license is mandatory to sell my work (even if I'm selling it on marketplace). If so, what type of license do i need?