First, I'd like to thank Ilya Kuzmichev, for his Curve Drawing System! See more here: https://www.artstation.com/artwork/9dk2o
I couldn't have done this door without it.
I also used the Perspective Warp Node for small details.
This project is 100% Substance Designer (except for the renders).
As always, a relatively quick presentation of the project, in video: https://www.youtube.com/watch?v=Ya_HLDdZVD4
Jules Lavirotte Art Nouveau door in Paris STUDY [Substance Designer]