If your artwork is a diptych or triptych, or has any component of having multiple panels that are not connected - please check the box, "This is a multi-panel artwork" on the Packaging page during upload.
This is very important because it will help to calculate your customer's shipping cost.
This detail should also be written as a note in your Description field so that your customer can read exactly what to expect upon delivery.
This is also a great time for you to take advantage of Multiple Images. We advise that you take several additional photographs of the panels displayed in various ways. (I.e, with or without a space between them, or one above the other displayed on a wall.) You will be prompted to upload multiple images once you have submitted your main image upload. For more information on multiple images, please visit our FAQ article.