How do you repair moth holes in a cashmere sweater?

First, check to see if your sweater came with extra threads for repair. If not, or if you’ve lost them, you can use embroidery thread in a matching color. Turn the sweater inside-out and place a small, firm object, such as a champagne cork, under the hole. Thread an embroidery needle with the thread, but don’t knot the end. Pull the needle through one of the loops of the sweater next to the hole, and pull the thread almost all the way through, so that just a small amount (about an inch) is left behind. Then, pull the thread through an adjacent loop. Continue sewing in an octagon pattern around the hole, then gently pull the 2 ends of the thread to close the hole after you sew your eight stitch. If the fabric looks smooth on the front side, tie a double knot in the ends of the thread to secure them.