The fabric lines show how the patterns sit. The sleeve is pulling to the front. The split sleeve pattern shows you why.
Alison compared the jacket sleeves to a Sandra Betzina and it was obvious that the sleeves are too high and not wide enough for all four of us. Seriously. It was a real learning for us.
The other issue I realised is the sleeve is gathered to a cuff piece so I can live with this sleeve as long as I square off the elbow to wrist pattern lines. Tasia (Sewaholic) recommended moving the cuff sleeve gathers to the back of the sleeve to alleviate the sleeve line.
I have another trial in the works.