How to sew gathers with elastic thread and flat braided elastic　シャーリングゴム・平ゴム・コールゴムを使ったギャザーの縫い方

How to sew gathers with elastic thread and flat braided elastic. (wie man mit elastischem faden näht/comment coudre avec du fil élastique/como costurar com fio elástico/Cách may bằng chỉ thun/Cómo coser con hilo elástico/come cucire con filo elastico/как шить с эластичной нитью/كيفية خياطة مع موضوع مرنة) Elastic shrinks when exposed to steam. Adjust the gather amount to sew finished size with backcalculating the shrinkage. When you use elastic thread adjust by the fabric. --------------------------------