I am making this sweater, I think already have the answer to my question, but I'll ask you guys just to be sure.
My directions I am following are obviously for an experienced knitter and as this is my first real knitting project so I got lost a few times. I finally finished the body and I am now up to the arms...which the directions convieniently say, "knit untill you reach the desired legnth." So, unless someone invents a device where I can reach inside the mothers womb then I have a bit of a problem. What is a correct proportion, if such a proportion exists, for an arm length in relation to the body?