I was drawn to PCA several years ago. Still could be today, though I wouldn't do any of it on Paint.
The amount of work put into a custom is great, but often times people came up with shabby mods or tried to make smooth shading which didn't sense to me. The way I see it, if it's going to be "pixel" cars, I'm going to want to see pixel definition. It brings out sharpness, and it lives up to its name. Even gradients can't be high-color gradients. I think if it was originally done on Paint, it should have low-colours.. like 256 colours.
I may try at it in the future. Mostly likely with a '50s or '60s lowrider.