The only way to sometimes get the results you want from your project and design is to create a 3D model. You need 3D models because they show you what your design will look like once it is complete, and you will see how it might look once it goes into production. You need that kind of reassurance because it is the only way to get what you need to continue your project.
You have to know how to use 3D models today because every company that works in design uses them. They expect you to come in the first day knowing how to use these things, and you will find out how easy it is to see what you are doing and make it work better. You will notice all the little faults that are in there, and you will fix them on the spot instead of waiting to find out it does not work in the real world. That is a major problem, and you will skip a revision step if you use the 3D models.
Learning to use models in 3D is easy when you find tutorials online that show you what to do. You have plenty of chances to make changes to the things you make once you have used the modeling program, and you will start to expand the things you can do with the program the more you use it. Your employer will want you to know this before you are hired. Learning just a few tutorials will do everything you need, and you will not have to worry about going into the job unprepared. You know the most critical part of the design world today, and you can do it all on your computer for free using a website that offers a 3D modeling program.