You take a length of thread and knot one end and pull the other end through the eye of a needle. You take up a piece of cloth and push your needle in one side of the cloth and pull it out on the other until it reaches its knot. You leave a space. You push your needle back through the cloth and pull it out on the other side. So you continue until you have made a line, or a curve, or a wave of stitches. This is sewing. That is all there is - needle, thread, cloth - and the patterns the thread makes as the needle takes it in and out. .