[Karin]

Since no one else is jumping in here, I can only offer a bit of insight from lengthening things, which is that when you change the length, the width (or circumference) changes a bit too. So my tendency in the case of shortening a sleeve would be to do it in a way that ensures the sleeve is the width you want at various points on the arm. Not sure if this is relevant for the pattern you’re using.

[Karin]

For what it’s worth, I didn’t find that information on the pattern I bought either. I usually need an extra inch or two (or three) spread through the torso, and so I look for waist length info. The best I could do was to measure the pattern and hope for the best!

Others here have spoken of making a muslin, which I admire but will never be organized or patient enough to do 🙂

[Karin]

Thank Liesl; sorry to be slow to respond. That helps to figure out how much I should lengthen the bodice. It’s a slight problem that the pattern measurements don’t specify what the finished waist length is in each size. I lengthen as a matter of course anyway, but it’s sometimes hard to know how much!

[Karin]

Oh, I can’t believe I didn’t think of that! Thank you so much.
I should probably be working on a muslin instead of with the good fabric instead, but you’ve given me a better chance of getting it right first time 🙂