Make a ring with the thread or yarn, insert the needle and hold the thread or yarn.
Remove the yarn or string of the buttonhole that has formed and stretched to tighten the knot.
Taking the buttonhole between the thumb and forefinger of the left hand, hold the thread or yarn with needle and pass through the eye, thus forming the first point of chain.
For each following string hold the thread or yarn as shown in the diagram above and pass through the point that is on the needle. Repeat until you have the required number of chains.