Having a Go at Painting Race Track Figures

I know this is something loads of people do all the time, but this is the first time in my life I've tried doing this so I thought I'd document it.
I used a technique that ‪@conquestracingclub‬ mentioned recently in one of his live streams, and everything I did after that is almost certainly exactly not the right way to do things.
‪@thatslotcarguy‬ said recently 2023 is the year of having a go.... so I'm having a go