There are no white seam allowances, rather, the coloured borders have been made wide enough to use as both a seam allowance, and a coloured border on a napkin, but without taking away the same cloths ability to be used for larger projects. Napkins made with this fabric will be approx 8 inches square (fabric will cut to 9 inch squares), with a half inch seam allowance on each side. Cards with the same texts are available in my zazzle shop. Matching printables available for free on my website. Decals have been sized at 5" square, which fits well on all sizes. Again, please contact me if you'd like them in other sizes. PLEASE CONTACT ME IF YOU'D LIKE THESE IN OTHER SIZES.