Not sure how to rate this pattern. I made many changes....fully lined, longer (below knee), zipper and storm flap down front, zippers up from bottom of side seams. My fabric was non stretch, so fit was tighter than pattern size suggested (10 on upper body, 13 from armholes down). Wouldn't have been big enough for button overlap.
Instructions would not have been detailed enough if I wasn't an intermediate sewer.....and if I didn't have help. Sewed most of it at 3 day retreat, and the organizer was VERY experienced and helpful. I couldn't have done this on my own.
