it's a light weight fusible interfacing. has tiny bumps on the fusible side. you lay the fusible side on the front of the fabric with the drawn pattern on the smooth side. stitch on the drawn lines and snip an area to turn it right side out (if necessary to snip). this turning places the bumpy side of the fusible on the back now and all the raw edges are inside. fuse to your background fabric and stitch in place. i did blanket stitches.