The cover of a car, while simple, has its own form and this form is changed according to the car. In fact, you cannot use a simple rectangle or a repeating form to design a cover that has smooth edges parallel to your car and looks stylish. But in this tutorial, you will learn how to create a very clean, stylish and properly sized cover for your favorite car.
https://www.artstation.com/saharkhazeni/blog/e1GMq/how-to-make-a-car-cover-in-marvelous-designer