Originally Posted by Moonpi
Are they figuring the difference to miter corners? In that case, you would start sewing from centers to ends, and end up with equal overhangs to sew at 45*. I can't tell from the picture whether the friendship star is pieced in that or appliqued on top.
If you can imagine this: the wallhanging is done in rings around the center picture.
So the side strip has at the bottom: half triangle square of star and green border.
And then it goes along the side and at the top there is quarter triangle and half triangle( of the star). So the red is like an arrow at the top. That's why the size is so important. It has to fit exactly.