Fran, if you mean you want to sell prints of your originals here on this site, you have to have a digital file/or photograph of work scanned as a file.. then you just go to the members area click on your area where it says upload files... Your files should be big enough to print to what ever size you would like to offer.. I believe artwanted has guidelines here for that.. anyway once you upload your file, artwanted software will automatically state what sizes it will be able to print a decent print of that file you have uploaded.. hope that is what you were asking and this helps..