@KrackoCloud: This took about 12 hours - and if you count the
original version that I threw out because it had even more mistakes (the most glaring one being the train being way too small), it was about 20 hours of work between "I'm going to do a train station" and "I have a train station that's about 75% correct". Note: the project that I did this for
did not succeed - at some point you have to know when to finish and move on, even if there are many mistakes remaining.
@Kaze_Senshi: The most important thing to remember is that your rotated object is a box whose top plane is parallel to the top plane of the box containing the train. Therefore, the vanishing points of the rotated object have to be
on the same horizontal line as the vanishing points of the box containing the train.
See here. Note that the left hand point is way too far to use a ruler on if you're drawing a physical picture - that's when you have to be good at guessing.
You can also see why the upper left of the original picture has so many mistakes: I messed up the convergence. I admit it's rather embarrassing for someone who claims to be good at perspective to make such an obvious mistake...
