Will the true DIYers please look away for a second, or kindly put on your capes and get here already! An arched window (please don't call it semi-circle because it would make things easier if it actually was) is lovely, except when it faces west and shoots laser beams of sunlight into your family room and straight at your daughter's spot at the dinner table. I had a plan, and it was a decent plan, however a couple of steps may have been missing. Right now, with this super fabric, I may just leap off the ladder!
No need to stay tuned for the finished project, as I typically go for months with some half finished, good enough type of arrangement.