I didn’t get a photo of the toile but there was way too little fabric in the shoulder area and the neckline was flying high because of to deep shoulder slope, the sleeves were tight and the armholes too, so I slashed straight down from the necks seam line to mid sleeve and measured the gap to 4 cm at the shoulder, pinned it back together and then slashed straight over the chest and in to the sleeve, to see how much the armhole should be lowered and measured it to 1 cm.

expanding the yoke 4cm in my case

expanding the facing with the same angle at the same place.

and the collar but more evenly

lowering the bottom of armhole 1cm

Widening sleeve and lifting the top of sleeve cap 1cm.

When you are making changes it is also important to smooth all lines so the patterns maintains its character and the changes are invisible except for the fact that it now fits much better. You will also have to replace all marking as most of them have moved and won’t match anymore.

After these changes it fit perfectly,

This is Mimi blouse with all details here.