Guys so i found this add on which helps me to set up the camera angles when doing an architectural scene but i being struggling how to set it up properly according to the reference i’m using.
So is it possible to get some help?
The reference image
The reference image
Thank you so much mate i fixed it thanks to you 
I guess my green lines should be based on the horizontal lines to get proper perspective anyway
it did work yeah i’m happy with it