I'm getting the skirt together today.
The velvet's tricky and the brocade bands must fit perfectly to look like three continuous rings.
I pinned each two panels at the top, bottom and at the bands.
I added more pins and basted the seam.
When you lay two layers of velvet right sides in and press with a finger, you can see a layer moved in one direction. When basting, I just moved it two milimeters in the opposite direction.
This way I got quite a satisfactory result. I started to join each two panels together.