So, I embroidered on a t-shirt today. Usually, I just fold over the extra stabilizer over the back of the design and hand stitch so it will be soft on the inside. But this time, I used a fusible tricot, and the directions said to use medium to high heat with the iron. I tried it, and even used a press cloth, and it shrunk before my eyes! How am I supposed to use this stuff? I had my iron set on wool, so maybe that was too hot? Luckily, it peeled right off and after rinsing the shirt the embroidery was fine. What should I have done differently?