Should be pretty simple, if perhaps tedious.
What I want is a vector (or at least high res) template to use for curvilinear perspective.
Lost you? Basically, I want this:
with a transparent background, in high quality, so I can draw overtop of it.
Ideally it could have a few more divisions than this example and have every third or fourth line slightly bolder than the others, but that's not necessary.
Because I'm super picky about quality though, I would prefer to get it as a vector (either .ai or .svg,) but I'll accept it in a high enough resolution .png (say 3000x3000 pixels)
Don't just expand it to 3000px in photoshop or use an auto-trace in Illustrator; if I wanted that, I could do it myself. I'd like to see it done right.
See? Not complicated, but tedious.
Okay... GO!