i just made an unlined Roller Skate dress. I cut 1 1/2″ facings for the armholes, overcast the edges as I was too lazy to turn them under for a clean finish, and topstitched approx. 1″ from armhole edge. stitching that far from the edge is a little fiddly, but my print hides the stitches. For the neck, I used the contrast neck trim on the inside as a facing, extending the back facing to just past the back placket. neck is also topstitched approx. 1″ from edge. I didn’t use any interfacing, but next time I would, especially at the neck. Doesn’t seem as essential at the armhole. I used 7/8″ wide bias tape on the inside for the elastic casing.
While I am taking about modifications, I lengthen this pattern 2″ on the size 12, for my average height 9 1/2 yo. I find this pattern to run a little short for here and want the skirt to hit mid to low knee so she has room to grow. I also drop the casing 1″. Next time I think I might also drop the armhole 1/4″.
I”ll link up an in progress picture of my facing construction.
https://www.flickr.com/photos/darcibee/14079709960/