What Thimblebug is working on is a Teflon applique sheet. This allows you to remove the fusible backing, place it where you want it (pattern underneath the Teflon) and press in place. Once you have a section fused together, you can peel it off the teflon and move it to your background fabric. Follow your instructions on the order of the pieces to lay down first.
Awesome eagle Thimblebug!