This is an old tutorial I made a long time ago, but I don't think I ever added it here. Feel free to download it and use it as a reference sheet, and good luck with your sewing! Important note: When I say the exact middle of the blue seam, I mean that in a horizontal sense: if you drew a line down your shoulder into your arm, the midpoint of that blue seam will be on that invisible line (as seen in the reference photo). Not that the seam itself should sit on top of your shoulder. Also, the top inside corners of panels 5 and 6, the front overlap pieces, will get folded in and eaten up by the collar.