u/lisarobink

Hello! What is this technique called?
I’d love some help with the name of the diamond braid in the first image. Is there a tutorial or link someone can share so I can give it a try? Also, I’ve tried to use a round lace (which is too firm as in photo) but even when I’ve tried to do it with a flat lace the X marks go over and under *not above as in the brown photo reference. I’m struggling to figure this out and the source image isn’t good for viewing the details.

Anyone know what this is? How to do it?