Hmm, well, you put it on the template, &, on the fabric you are turning under. Has to be on both, as it only sticks to itself, if that makes sense.
I did ask hubby about it, as he uses it in his leatherwork, & he said, once it dries, no worry, no smell. So it sounds pretty safe to me. I was mostly worried about any lingering smell. Sounds like it dries up & goes away. I did try the glue stick, but it actually sticks to the fp, at least with the method I tried, then you soak your block & have to remove it that way, even with tweezers in tiny spots. So was not real impressed with that method.