Hi, I've just finished my first Sunday Brunch Jacket and it all went smoothly except when I came to put on the sleeves. I was puzzled by the small diagonal between the curved shoulder line and the side seam edge (like the point where they meet has been chopped off) - it didn't seem to correspond size-wise to anything and it was really hard to get a smooth line under the arm when I sewed up the front and back because there was a big notch in the seam allowance. That chopped-off corner isn't shown or mentioned in the instructions. In the end the generous seam allowance meant it didn't matter much; but I'd like to make the jacket again sometime and it'd be good to know what I should do next time to get it to go together properly - did I miss something in the instructions along the way?