Let's draft together the pattern of this interesting corset.
It is full of details: a pleated cup, bishop sleeves, bones, a two pieces collar and button stand.
It offers some challenges also in the sewing process as it combines a sheer/lightweight fabric (as organza or organdis) and a stiffer one for the actual corset (twill, satin, duchesse, denim, gabardine...). We suggest to use also foam as inner layer for cups. You can find all the steps to draft the cup pieces explained here.
Start from a basic block with zero wearing ease and with darts. You also need a basic sleeve.
A full explanation on corsets and much more is covered in our basic blocks course/module 2.