The San Diego pattern has a very unique way of making the facing and collar. The process isn't difficult but requires precise stitching to get a clean, sharp look. We have made a lot of San Diego samples and have found, through trial and error, several tricks for more accurate stitching. To help you make your best San Diego, we have put together a little tutorial on sewing the neckline, complete with tips that we have found make the process easier. Enjoy!