No matter how long you've been sewing, there will come a moment when you smack your forehead in disbelief at some silly mistake you've made. Today was my day.
I was making the Style Arc Hepburn Riding skirt, and was dismayed to discover that when I had things basted together the waistline was too big. I took it in a bit -- still too big. This was puzzling, as the many other Style Arc patterns I had made were very close to fitting right out of the envelope. I set it aside for a bit, and when I came back to it I had a little niggling thought that I should check the pleat markings. Yup, there it was -- a silly Sewing 101 mistake -- I had folded the pleat with no regard for the markings on the pattern! D'Oh.
Fortunately, it wasn't too hard to remedy, but man, did I feel stupid! Lesson learned -- no matter how simple you think something is -- check the directions!