The fabric lines show how the patterns sit. The sleeve is pulling to the front. The split sleeve pattern shows you why. The sleeve is not wide enough to sit flat.
The other issue I realised is the sleeve is gathered to a cuff piece and in reality the cuff gathers mean if the sleeve isn't sitting quiet right, the gathers are the cuff will negate any drag lines. Tasia (Sewaholic) recommended moving the cuff sleeve gathers to the back of the sleeve to alleviate the sleeve line.