Sticker sheet layout is confusing

The 4x6 sticker sheet layout is quite confusing. I had to submit 3 designs, and it still wasn't quite what I wanted. I approved the final proof so some of the blame is on me, but StickerMule's sticker sheet layout needs improvement. I realize now that part of the problem was I downloaded a template from StickerMule (sticker-sheets-download-6x4.zip) - HOWEVER, that is in 6x4 orientation, BUT the sheets are in 4x6 orientation. Apparently the backend won't just rotate the image. Instead it treats your 6x4 as 4x3 and doubles the image vertically to give you a 4x6.