I’m sewing a Burda dress pattern, which has separate pattern pieces for the short sleeves and long sleeves. I had planned to make long sleeves, made my fitting changes on the pattern, but then realized that I was short of fabric, so got out the short sleeve pattern piece. I laid it over top of the long sleeve to trace the alterations. I am now really confused – shouldn’t the only difference between the two pieces be the length? There are distinct differences in the shape of the sleeve cap between the short and long sleeve patterns – and NOT due to alterations I have made They are VERY different, and yet, both have to fit into the same armhole. I have never noticed this before. Has anyone encountered this? Thanks for your help!