Here’s what I’ve done to raise necklines (yep, no cleavage to speak of either)
The front neckline I likely to be on the fold. If it’s one piece all the way to the shoulders then it’s easier. I don’t have the Cinema pattern (yet) but I’m guessing the neckline is split over two pattern pieces.
Trace the pattern pieces for the front and yoke and overlap them so that the seam allowance is taken care of.
With a piece of paper or pattern tracing medium of your choice underneath, add the height you want to the centre front neckline.
Mark a dot here. Now draw a gradual curve from this point to the edge of the neckline at the shoulder.
It will be symmetrical because it’s cut on the fold. Just make sure the bit at the centre front I almost flat so you don’t end up with an accidental notch.
Or, of course, use the notch feature of the pattern and it won’t matter if your curve is less than perfect.
Hope that all makes sense. Apologies in advance for typos. Typed on the phone while making breakfast. 🙂