Here is the truck primed and ready to go. I use model master grey primer. You can use what you want- as long as it is primer. The next few steps in painting you can do the same thing for spraying the primer on the car.
The first thing I do when I spray a car is tack it. I lightly spray the car and let it sit for a few minates.
I am going to redo these pictures so bear with me.