So I tried different things:
I'm posting this image really big so you can see all the detail. From left to right, here is what I did:
1. Josephine Knot done with the first half of a double stitch (10 halves). When I was first making JKs, I used the first half of the double stitch repeated. For some reason it took me ages to try it with the second half instead! Anyway, the first half is much more difficult to work with, causing lots of twisting and making it difficult to achieve a nice looking, regular JK. So second half is definitely the way to go (I bet you knew that already!). But just to show you, the first JK is done with first halves.
2. Josephine Knot done with the second half of a double stitch (10 halves). A much smoother, rounder looking JK. But the last half stitch twists towards the back too much I find and it appears to lean left.
3. JK done with second half of the double stitch but adding a full stitch at the beginning and at the end (1ds, 8 halves, 1 ds). Yes, that's better.
4. KJ done with second half of the double stitch and just an extra first half of a double stitch added at the end (10 second halves + 1 first half). Trying to prevent twisting again but that didn't do the trick.
5 and 6. JK done with second half of the double stitch but before closing the ring, pass your shuttle through the ring from front to back. Yes, that did it. Passing the shuttle through from front to back means that the thread now exits the back of your ring so the next stitches pull slightly on the thread and help bring the stitches in line for a much more round and full looking JK.
I'm happy with those last two versions and that's the way I'll be making my JKs in future. Here is the new pattern I'm working on with lots of JKs! It's evolved quite a bit from the very first version but I felt the centre was too crowded and the whole thing was quite tight with three rounds so I opened up the centre and changed the second round a bit. Any good? Criticism welcome!
I'm still giving it some thought, trying to get spacing between the chains more even, I'm adjusting that on the next sample. I'm also not too happy with the split ring I used to make this a one pass design. It ends up having a strange shape and I wish I could find a better way. I really don't want to cut and tie and make this two rounds. Can I live with a slightly strange shaped small ring? I don't know. I'm sure you can spot which one it is? It's the one to the left of the top point. Oh! I got it! I was just re-reading myself before publishing this blogpost and looking at the photo above, I just found where I need to start so that I won't have the problem of the misshapen ring. Quick, I'll tat the next sample and post again.
The photo below shows some of the gradual evolution:
Best wishes,
Frivole