Once we ship you your initial order of you custom design, it will have a UPC sticker on the back of every piece. This sticker will include a unique SKU (example, SC271). When you place a reorder through Faire, select Existing Custom Map #1, #2, or #3 and choose your quantities, sizes, and colors. Then, in the notes section, let us know which SKU goes with each Existing Custom Map number.