You have the right fusible. When pressing the fusible to the shirts...press & hold for several seconds (I count to 10), and then lift the iron and put on a new spot, repeat. I use wool setting and it takes a bit. I've found that if I just iron the fusible (moving the iron back and forth), I don't always get a good hold & also stretches the fusible a bit (along with the shirts). Glad you got the pellon to stay.