Question for Artist on Fiverr

[wintrirose]

Hello fello artists!
Hope you guys are doing well during this time of the year^^ . Let’s get to the point, I have a page on Tumblr and I want to promote my Gig but I don’t know if I should call it an art commission or not? Please help me figure it out or you can tell me more about making commission (it’s my first time doing an art service) I would like to learn more about it 😊