Zipper Insertion with Overlay Skirt

I design all my first communion dresses that I sell on my website (www.brokenbreadrosaries.com) and on Etsy. I designed a dress with a satin, princess seamed bodice and an A-line skirt with an organza overlay. It has a zipper closure in the back. I faced a problem when I needed to insert the invisible zipper. I wanted the overlay to meet at the zipper, but I didn't want the overlay to be in the same center back seam as the rest of the satin skirt. (I hope that make sense.) I wanted it that way so that the overlay would move on its own and almost float (which it does;) )
First, I attached the placed the overlay over the satin skirt and lined up the finished edges of the center back of the overlay skirt to the unfinished edges of the satin skirt, leaving the satin skirt edges overhanging the overlay edges by 7/8", and machine-basted them together along the bodice seam. Then I attached the bodice. Next I inserted the zipper per the zipper instructions, making sure that the bodice/skirt seam matched up. (to do that, install one side, zip the zipper and pin the seam to the zipper mark its place, unzip the zipper and install the second side as usual.)

This is a photo of the zipper installed-truly invisible!! The seam doesn't look like it matches, but does, it just isn't ironed yet and the organza is very float-y.

Here is the whole backside of the dress, with the zipper installed. That is part of sewing that I enjoy the most, seeing a design in my head translating it to reality and solving the problems/opportunities for growth that each garment presents!

Happy Sewing!

Arlene