|Most f the time after I trim a pattern their are large pieces of tissue that are left over. In the past I've just tossed them in the trash. Not anymore! Now I use a 9 x 12 envelope to save the larger tissue pieces in and tack the envelope to a cork board in my sewing room. When I am altering a pattern and need pieces of tissue such as when I'm doing a FBA, I retrieve the tissue from the envelope, press it flat with a dry iron and insert and tape it where needed. It doesn't cost a thing but is oh so helpful.