Yep, that's the one. Mine has smaller pieces because I wanted to make it from the sort of scraps I have. I'm surprised I hadn't seen it.
BTW, in looking back, I see a typo.
It should read.... "2 pieces 2.5 x 7.5", all scraps, and 4 1.5" squares of muslin for the star points. There were a few extra words there."
PS After I'd made this, I decided a border print didn't work well for this job.