Modeling in paper can be fun, the models can be very impressive too, however you can not expect the same accuracy of decently produced plastic or resin kit.
Here is a picture of a paper model my wife made ; it's M41 Pulse Rifle (from the movie Alien) at scale 1/1, completely made of paper (46 sheets of A4)
BTW this is one of the many free models that can be found on the internet.