Ladies... I don't think I made it clear in my tutorial that the red is only for the "leading" around each piece in the windowpane... THE SQUARE SHOULD BE WITHOUT ANY RED OUTLINING IT. I will be using a wider strip of red for the sashing. Hope that is clear. The way that Camie's looks is correct, as is my example.
So, NO red on the outside of the square.
Let me know if you have any questions.