Lining The Dress For McCalls 6015

This is McCalls 6015. The dress is not fully lined as I had thought, so the trial for me was to find a way to fully line it. The instructions do not include the bottom half of the zipper to be lined. This is not the look that I was looking for, so I had to search online to find a way to fully line this dress.  I used Angela Kane's method to line the zipper , but I had to slip stitch (See photo below) the dress at the shoulders.

Although I accomplished the task of lining the dress so that the bottom half of the zipper is not exposed, I will find another method because I do not want to have to slip stitch the shoulders together each time I make this dress.