I have watched two videos
The first one has a scrap yarn that makes the afterthough heel a bit premeditated
I went by the second video and just cut a live stitch (yikes!)
I have to disapoint you though -- it requires to kitchener/graft the heel
I have seen many neat short row heels, and I used Sweet Tomato for my first pair of socks, so I decided to try something new.
Is there a good video for a German short row heel?