So the rough plan on this roll collar is to add another crescent shaped interfacing and stitch rows of curves, starting from the centre.
See what I mean? I'm working on the right side of the fabric and using the zipper foot as my width guide. Yep, crude but it works.
And that's all that you need to do before continuing on your jacket construction journey.
Note to self - plan ahead of time and sew the pad stitching before constructing the jacket - Doh!Don't just look at what I've done, go to some real references.
Singer Tailoring - 1988,
Jackets for real people by Alto, Neall and Palmer - 2006,
New Simplicity Sewing Book - 1979
Easy, Easier, Easiest Tailoring by Palmer and Pletsch - 1977