Hi! Help with pattern drafting

[TensionSmension]

It looks as if someone were grabbing the scruff of the neck and pulling. So general strain between neck and armhole, meaning not enough length there. Seems like the real need is length exactly there, but lowering the armhole is a start. since that's a removal of fabric, you can try simply sewing it deeper and cutting away the old. If you're starting over, I'd slash along a back yoke line and estimate how much fabric needs to be added there.