Here's how I pieced it:
I sewed together four quarters
Then made two halves
Then started from the center and sewed toward the outside corner
Then went back to the center and sewed to the opposite corner
I pieced it this way so that I wouldn't have to line up a lot of seams all in one go. Doing it this way minimized the chance of sewing wonky seams.
Anyway, my friends, I'm now considering putting a border or two on this monster. We shall see. Toodle loo.