Using a straight sew, sew incredibly near to the edge of the fabric. There will be a little seam, but I don’t think you’ll see it much Whilst you’re wearing the scrunchie. Have a look at their very small ties for thin hair or braids, or 1 of their seasonal https://allhealthmarket.com/product/hair-extensions-wigs/hair-extensions/braid/long-braided-ponytail-extension-with-hair-tie-straight-wrap-around-hair-for-women/