Welcome, Tish. Most of us here do not block a bishop, we just tie it off. Maggieb gave us lessons many years ago. http://maggiebsmocks.typepad.com/smocking/2008/03/how-to-pleat-a.html Are you using a plate that is designed for a bishop. If so, you will see the first stitches in the design do not have a lot of give but the bottom ones do. After finishing, it will fan out and it will be perfect. If you need more help, just ask.