I use binding to finish off most of my quilts but sometime I use facing. The reason is I like quilting stretching all the way out on some art quilts and I think it is less distracting.
I have tried various way to make it and I settled single layer facing.
Miter corner was fine but I don’t see the point of creating it with extra difficulty and having seams on the already bulky corner is not nice.
Double folded facing removes the time of hemming but I don’t like the extra thickness especially on the corners.
So this is how I do.