Or should I say, in my case, one and a half star. I realised after I'd got the outer borders on, that I'd put two pieces in the wrong way.
As the object of the lesson was to make flying geese, and I'd successfully made those, I decided to leave the block as it was, As there are quite a few pieces involved, I thought it could end up getting a bit messy and going back together may not be so simple. As it won't affect the overall pattern of the quilt, being a sampler quilt, it can stay. Maybe sewing after a sleepless night isn't such a good idea.