Fuse crutch.
The crutch keeps all formers aligned with each other.
Some wax paper over the plans before building the crutch.
For the most part I use polyvinyl acetate (PVA, elmer's wood glue) glue for the bulk of my building. If blobs aren't present, it dries fairly quickly, is cheap at about 15 bucks a gallon and very strong (good enough for furniture). Safe to move set up time of about 20 minutes: I usually have other parts to work on while it dries and good when set up time is needed for large parts.
The crutch nose was made 1 inch longer.
A heat gun is needed to easily remove the paper templates from the wood and separate multiple wood layers.
Seems like the notches in the wing saddle never align perfectly, so they are marked before cutting.
Wing saddles epoxied to the crutch. Sistered in a 1 inch extension on the front of the wing saddle to match the crutch length.