Hello,
Here is another example of how important prep work is: The color I'm using for this car is not as opaque as the blue I used in the GT3. It is more translucent. This means it will take more paint to properly cover the surface evenly.
Before even thinking of color coats, I rescribed the panel lines. Look at the panel lines (doors, door handle, weatherstrip, roof, hatch, hood, bumpers etc) This body already has 6 coats of color, and will get some more, before clear. I have many things to worry about, but loosing the panel lines to paint buildup is not one of them right now.
Thanks,