^
Hi there! 😀
There are really not many great ressources for linear perspective out there in the web, what I read on tutorials so far was either extremely dumbed down to the point of misinformation (Just make a horizon-line here, put 1 or 2 vanishing points somewhere on it, derpyderp :P) or it was a bunch of tricks accumulated to make production easier and faster, but didn’t really help with understanding perspective (I love doing 3D for overpainting and making perspective grids, but one’s gotta know the basics I believe)
Soooo, I am not an industrial designer nor an architect, just a guy that draws so take it all with a grain of salt and consult your local doctor to get your perspective checked by a professional.