Ah damn. Thanks for the help anyway.

I'm having an insane amount confusion and frustration trying to get this all sorted out.

My problem is that after lining the X and Y axis bars, it's the Z axis that's lining incorrectly. Instead of the Z grid streaming straight down along side the vertical edges of the building in the photo, it streams outwards on an angle according to my view.

Here is the photo I'm trying to recreate.
http://26.media.tumblr.com/tumblr_lgd1vyL5I91qat99uo1_500.jpg

And for a cleaner more hires image, here's an image a user has made just for clarity.
http://i51.tinypic.com/2w39hjm.jpg