I didn't mean to worry everyone. I was just trying to help! My friend is VERY short. She is 4'11 or something like that. Maybe even an inch shorter. That's why the jacket is so long on her. I'm 5'6". It was shorter on me. My friend would have wanted the 33.5" or 35" sweater. She was wearing the 37"
Someone said they didn't understand what I meant about adding sts in the back. Lookie:
On top is the schematic (which is in the pdf you downloaded), below is me showing what I meant about adding sts to add width to the back. You will notice that it makes the neck wider (which may or may not be a problem depending if you added 15 sts or 5sts). The only way to remedy that would be by doubling up some decs going up to the neck, but don't quote me on that because I'm not 100% sure that it would work perfectly.
Here's what I suggest: If your row gauge is correct, use the schematic and measure the length of jacket you want and choose your size according to that. If your row gauge is incorrect, I still suggest making a front first and modifying your back to fit the front. Pretty much any size front will fit anyone, it's just going to be a matter of how much they overlap (and the width of the sleeves). Do you see what I mean?
Also, a comment about choosing a substitution: Go for something that will make a firmer fabric. The fabric needs to have enough body that the front holds its shape well and doesn't flop with the weight of the facing. Mintyfresh mentioned she could see the incs. In the original yarn, you could see the incs a little bit, but because of the feltiness (yes, I made that word up) of the yarn, you didn't see them a lot. The Karabella yarn does not have good stitch definition.
And because I can't keep my mouth shut - a comment about the FO that Jackie linked to: It's very easy to modify the length of sleeves. Work the increases as directed and when the sleeves are the length you want, move on to the next section! -This is assuming you made all of the incs before the sleeves are long enough for you. If they are still to long, rip back and work fewer rows between the incs. Easy peasy.
I hope I've helped this time, instead of causing worry and confusion. I'll cork it now. :)