So far, I’m doing fine! You can see I’m managing to retain the corner right angle – the diagonal is remaining flat and the points are aligning as they should!
I’ve had to redo a couple of the rows because the points were slightly out of alignment but the last row worked out correctly on the first go! Maybe I’ve begun to get the hang of how to position and pin the diamond joins so the points position precisely. Unlike the previous attempt when I ended up with a mess.