This is going to sound daft, but could you possibly have the sections mixed up so you are comparing to the wrong pattern pieces? Especially when there are so many vertical seams, they can look very similar (as I know from joining up the wrong bits) Grainlines will be different in different areas. Also, don't forget you added length to the coat. Did you also add to the lining? Hope you get it sorted. Anyhow, the expensive part is fine, which should cheer you up, and it looks lovely.