I don't see what there is to compensate for.I was thinking like this: Let's say I have a jacket that fits normally. The shoulder seams are sitting where they should be, but the jacket has my desired sleeve length of the original. I measure the sleeve of that jacket from shoulder seam to the end of the sleeve, then decide how much the shoulder seams need to drop, and then subtract that difference?
But if I subtract that amount... then I need to compensate for it somehow, by measuring the remainder of the upper sleeve portion? LMAO I know this sounds retarded.
Ah... I think I need to take a break from this guys, my thinking is totally slow right now.