I am teaching a Machine Finishing class this weekend and have been organising my notes and samples. Times change quickly and what is applicable one year ago is not so the next, so I have had to have a complete rethink about this class. One of the main changes is that the net is full of tutorials, image and video. So I have gone through the notes and included links to these so that the students can go back over the techniques in addition to the notes I provide.
When it came to the mitred corner I found Mr Google sent me to those that work for quilting and household sewing. There aren't that many for hand embroiderers. The best one I could find was one by Mary Corbet, but this was hand sewn, not machine sewn. It is much the same but the difference is that you sew on the reverse and you stop stitching at the fold line.
Now this might not seem a big thing but the difference is in the degree of the finish. For an embroiderer getting that hem to sit perfectly is important. People look more closely at hand embroidery than they do at a machined piece.
I then had another think about all those tutorials for the easy way to mitre a corner and they do have value if you are sewing serviettes, table cloths or quilts. I decided to add that to the class as well. Everyone will have their own serviette to use at morning tea, all be it just cotton not a linen one.
Then I went looking for a good tutorial on that technique. The one I liked the best is from Purl Solo. (Love that shop in NY.)
I suppose I really should learn how to make videos myself to go with my classes.