ACEO - Art Cards, Editions and Originals This is another mixed media ACEO that I just completed and listed for sale on eBay, it is of the Southwest Landscape. Just click my eBay Auctions link on the left to read more about it. I also listed it under SFA, which stands for Small Format Art. These are artwork done by a variety of different artists, the size of the artwork has to be 14" or less in length. If you like to collect and purchase smaller sized art pieces, you can search SFA on eBay to find something you love to have in your art collection.