Just when things seem to be rolling along so smoothly, I am reminded to pay closer attention. In this case, what looked symmetrical, wasn't. This "smooth-back" chair was slightly higher on one side causing some bubbling and wrinkling right on the front. Fortunately, a little tugging and smoothing helped enormously, but this is a case where "full" rather than "half" pinning was called for. Better observation, measuring and pinning the next time! Check out the process below.