How many sticker pack designs do I need to select?

The number of designs for a sticker pack is per pack, so if you wanted a pack with 5 different stickers, but every pack would have those same 5 stickers with the same header, this counts as 1 design. If you wanted 2 different headers and 10 different sticker designs, 5 in each pack, so 2 different packs, this is 2 designs and so on.