Tried my second shave today with an exquisitely sharp blade from Max and actually did much better.
At least until I dug in for a nice crease on the left cheek.

I still gave a go at my neck and did *alright* there, but there's lots of work to do on technique, obviously.

The sharper blade definitely made a difference, so the first DD I tried was less than "shave-ready", I think.

Thanks for all the support, gang.
I'll work it out eventually. Hopefully without significant scarring.