Great Stickers, Confusing Ordering

The "sticker pack" offer was a bit confusing to me. It said I to upload (up to) seven sticker designs to include in my sticker pack, so after uploading the first design, #1 out of 7, it said uploading #2 , #3, #4...etc., out of 7 was (optional) ...since it is a "pack" and the rest were optional, I thought it meant I was getting a pack of seven stickers no matter how many designs I uploaded, so with time running out to inquire about it, I just uploaded 2 more (for a total of 3 designs) figuring I'd get multiples to equal 7. The sticker packs came and looked nice, but of course each pack contained only three stickers. I would have at least added second copies of the three designs I had uploaded if I would have known. Now knowing how it works it was obviously my mistake, but as a first time order placer I didnt feel it was very clear.