I always wanted a little replica of my car. I used https://3dwarehouse.sketchup.com/model.html?id=4c6f6d46-88a6-4307-a0af-9cc48897d296 Original by Alabassiry. As my blue prints then created the mesh in Blender -> Meshmixer -> 3D Slicer.

This one I experienced a few holes and the back window came out all messed up I bought Premium Patch and Paint Lightweight Spackling Paste and filed them in let it dry then sanded them with 220 Gritt Sand paper.. Then I primed it , Sanded, primed and painted.. I'm happy with the result.. Good luck..