The first problem we encounter is that our wool needles do not pass through the holes of several buttons, the cat is too much and also the wool seems too big. How to do it? Here's an easy trick. You take a floss threaders (see photos) and you will thread your wool inside and pass it through the button hole then on your piece where the button goes (if you leave a good length of wool on the back of the button you can alternate with a wool needle, but normally the floss threaders can be used to sew on your piece where the button goes). I share photos with you to help you better understand this trick.