Hello! I hope you enjoy it here, and congrats on your first post 
To sell a project is to sell your make (that’s what it’s called here) only make made from patterns on Ribblr are able to be sold as they’re done through making a journal while making that pattern if you go to your My Makes you should have the option to sell it (if the pattern allows it)
Also this is something I try to do for newcomers here.
If you ever need help never hesitate to ask in the community, if you need immediate answers feel free to use the help center, search in the community, or the wiki [link below] and community guidelines if needed Happy crafting! Hope to see your crafts soon as well