When you sew your strips end to end, just make sure that when you sew them together lengthwise that two seams don't meet at the same place.
The binding is cut 1-1/2" and the piping is 1-3/4. That way, when you press in half, 1/4" of the piping will show.
This is a non-video tute for those of us who need to read the instructions (like me).
http://www.lvqg.org/media/2a7a5a699c...02ffffe415.pdf