@Petr_Tikhonov
I’ll leave this as an example for a curve from two views. Try to understand it by deleting the 3D curves, because to recreate them, you just need to take the side and top curves and use the “curve from two views” command.
also erase the surfaces and try to redo them from scratch, it will be preparatory for you to learn
I leave you two projects within this forum that I did in my free time just modeling nurbs.
the gun is a finished project, while the car I’m far from finishing because I currently don’t have much free time to dedicate to modeling beyond work.
this is the only case in which the modeling is mesh, done in zbrush, with a small contribution from rhinoceros