My second attempt to insert an invisible zipper wasn't as successful as the first one. See how lumpy and wavy it is? And not exactly invisible!!
So I ripped it out and re-read some of the tips I've found recently. The fabric is a woven but it has a bit of stretch to it. I fused some interfacing to the seam allowances and WOW! Complete difference. However, the second time, I realized the left side and right side were not properly aligned. So I ripped it again. (BTW, one of the best tips I read was to NOT anchor down your stitching by backstitching until completely done. Good for ripping!)
Third time was a charm. I zipped up the zipper before sewing down the second side and pin basted it in place. Then I opened the zipper and re-sewed the second side.
It's not completely invisible. Obviously, it's more noticeable because I used a black zipper on a fuschia fabric but I did that intentionally as the dress has some black trim (not shown in the photo). It's a side zipper so it won't be all that noticeable. But for you experienced sewers, should it be MORE invisible than it appears in the above right photo?
BTW, click on the photos for a close up of the cool embossing on the fabric! I love this fabric.