I'm demonstrating the same basic technique, but this time I carry it from blank green to the finished subdivisions of individual buildings (instead of just stopping once I lay down the frontage ruler). I think it explains itself fairly well, but my inbox is always open if anyone has questions.
I'll keep poking at this. I don't think the kind of basic video editing I need to do is difficult; it's just that every new piece of creative software (even the freeware tools I've been fiddling with) feels like dropping into the cockpit of a jet fighter for the first time when you're not familiar with the tools, so my typical response is a pained "eep" followed by desperate scurrying back to Planet Comfort.
For an example of what it looks like when I keep on doing this ... a lot ... see last post!
It doesn't stay orange. Good for separations in Photoshop, though.