The fabrics were pretty stable, but this shade was French blackout lined, so it was bulky. I doubled up the fusible buckram in the hem, and I fused the weight bar tube to it.
I hand-sewed the hem before adding the bottom row of rings and inserting the weight bar. Even though the weight bar tube is fused to the buckram, it's essential that the stitches for the rings go through the tube. The stitching also must go all the way to the end of the hem, not stop at the ring.
Oh, and the front does too :)