I thought it might make things bit easier if I explained a few things with photos and add in a few tips to make the construction go smoothly. The side seams are halfway down the page.
When I sew the bodice and lining pieces I always lay the backs on the table with rights sides up.
I then place the front right side down lining up one shoulder. I pin it without picking it up. I place the pin parallel to the edge so it won't twist out of place when I pick it up.
Pin and stitch one armhole. Pin and stitch the second armhole.
I use a knitting needle to push out the corners at the back neck.
Use you thumb nails and fingers to get it ready for pressing.
Press it well.
To do the side seamsOpen out the back side edges. Open out the front side edges and match the front bodice and lining to the back bodice and lining, right sides together.
Fold under the rest of the back side seam allowance.