You can easily upload several designs and display them on the sleeve and on the front for example. Just follow this tutorial: https://www.spreadshirt.co.uk/blog/2019/03/05/print-your-designs-on-more-print-areas/ You can also easily add descriptions to your designs by clicking on the edit button when you hover over your design and then on "Edit" right next to your design NAME on the top. Let me know if you have any other questions :-)