Once the system verifies if there is enough balance in your account (SOLO burned successfully, and payment confirmation), the user can continue with the process.
Make sure to check the file formats permitted for each category, then you can upload your file(s), you can add more information like a name, a description, and an external link where potential users can learn more about your art.
Each collection can have its own name, description, and a picture or GIF that represents the artworks included in the collection. Make sure this information is correct because once the collection is successfully uploaded, it cannot be edited.