Hey Steve, very nice that you are doing all this work. Really good stuff in here.
One note, watch out for keeping your vanishing points too close together. Especially in environments. It makes objects like building distort heavily and makes your life much harder.
Also, many of your vanishing points on the right side don't seem to line up very well.
I did a quick draw over to show how pulling the vanishing points way outside your image area will calm down the angles and make the building have a more natural appearance.
Let me know if you have any questions about this. : ) 