Tables must be covered to the floor on all visible sides. Storage items, such as boxes, must not be visible under your table. If you use a fitted stretch table cover (the type that wraps around the table legs and creates a fabric arch), you must either leave the space under the table completely empty or use an additional cover to ensure it is fully draped to the floor.
A professional display reflects the value of your handmade products, so please ensure your setup is neat and polished.