No real deadline apparently, but I'm pretty sure he'd want it done in about a month or so just to get it off his books of stuff waiting to be done.
Apparently he can also just take hand drawn stuff, or fix stuff up or whatever as well, so hopefully it shouldn't take you too long.
I'm pretty easy with what I want to be on it, as I'm going to forget stuff and have to do it with manual templates and brushes anyway, I am just after stuff that works for grimdarky streetscapes on my tablescapes board that isn't caution stripes or checkers, as those are premade stencils I've got already from him. Recruitment posters for PDF/
IG (which I have images for), graffiti script, larger versions of the same graffiti script for background/contrast, and street effects like lines and whatever else is painted on streets
For decals, I figured names for tank scrolls, and/or space hulk marines, and/or
LOTR/Hobbit minis, or just general marines - I can generate a lot of this myself, so a blank vector template with a few options that I can modify (having illustrator myself) would probably be fine - then I can just copy pasta it.