I am trying tackle rounded irregular shapes, for example electrical razor or side view mirror in car.
Just basically good concept to build that perfectly smooth surface from every side and tangent in some cases if needed to be mirrored.

First ideas for razor were to trace front and side profiles and then draw rounded curves or edited circles from top view, to have shapes for network command. Just thinking that last step is bit of a guess and not very accurate, maybe good with tweaking the rounded shape curves afterwards until it the surface looks ok. Like that example photo this would then be just base surface to build the rest of the model and trimmed as well.

For car mirror answer could be a more simpler one I guess, maybe just trace the front and make rounded profile, then loft like in the example and possibly some point editing to shape the surface if needed ?

Thanks again,
Timo