Hi Heather, I think a few details are being left out here which is causing some confusion. A product supports any number of decoration areas on a product which is what Greg has alluded to. Your issue is related to overlapping decoration areas with a custom mask. You ran into an issue where the preview was not showing correctly. We would recommend to not overlap decoration locations with a custom mask image applied as the mask applies based on the product image and does not consider any artwork added onto decoration areas that it overlaps.