First of all: my respect for those guys who can handle RR3's vinyls customization tab and got the arts skills to do those nice liveries.

I'm a step below here though: the vinyls tool has slapped me to the face the few times I've tried to do something with it. So I got a couple questions, and this topic will hopefully awaken a few hidden artists somewhere.

Q #1 - how the FQ can one / did I do that green strip in the back of my (rather messed) LaFerrari?

I know for sure I didn't spend much time on it, nor did I knew any special trick with those tools. Can somebody recall some geometric property of that section of the car, or even of the vinyls tools itself?
(I know you can't just try anything there now since only Paint is available for the LaFerrari)

PS. Just noticed how big the supports for the rear mirrors look in this last view, and that the support located farther from the camera looks actually thicker (right-side support in the last pic, left side in the second last pic).