@spikeyxxx Yeah, one of my biggest mistake here has been to not rely on reference images for a lot of very basic shapes and size of things.
I just looked into it, there are several problems:
-On a “regular” car (not cabriolet), the door include the rear mirror, and contains the window “holder” that comes and connect to the side of the wind shield and the roof.
-On a cabriolet, the rear mirror is also on the door, sometimes slightly backwards.
The thing is : everything is very messed up in terms of topology on my side as far as the rear mirror and the base of the wind shield are concerned.
Lesson learned : ALWAYS use reference image.
The only thing that is simple to do that I can do is to just get the front of the door a little closer to the front of the car :

But trying to move the rear mirror now, or having to solve the whole windshield issue if I try to pull the door more in front is not really feasible for me now.