This is a long and complicated work. Videos on YouTube on how to build, from scratch, a vehicle. Yes: detailed blue-prints, accurate measurements, wooden frame, etc...you could also use expending foam to fill the wooden frame and shape it to make the forms and lines of the car. Then, it`s fiberglass on top of that, lots of it to make sure you can sand, Bondo, and sand some more until you achieve the final look.