How old do you have to be to run an online store and do you need a license? -

hi im nicole im 16 and i really want to run my own buisness, i have my website ready have all my photos of my products ready, but i dont no weather im alowed to set up my own buisness. how old do you need to be? and do i need to have a liecense? i just want to sell handmade jewelry nothing major

18 and older, yes you need a license.