There’s a fantastic tutorial on the Cheetah3D forum to show you the process behind modelling a recreational vehicle, or an RV if you prefer.
The tutorial was put together by Cheetah3D user ZooHead and it comes in the form of 3 PDFs, so you can approach the tutorial at your own pace.
I picked up a few techniques myself that I don’t usually use and that I would happily use in my workflow. I’ve included a few images so you can take a look at what you’ll be creating.
You can download the PDF files for the tutorial here…