YES!! FINALLY, SOMEONE who gets it!! (And from looking at a bunch of your art I thought you liked apocalyptic type things, you know? You have a lot of pictures of ruins and beaten down buildings and destructive depictions).
Well, I usually use 3D work for complex perspective or collect a bunch of inspiration photographs and kinda reshape it. Drawing perspective isn't very difficult if you know the rules, it just takes time setting it all up.