New Joburg painting, stage two

I'm in stage two of this Joburg skyline painting.  Stage one was drawing in the black and white outlines of all the buildings, and now I'm working on the shading and contouring.

This is a commission for an executive who is moving to New York and will miss his Joburg.

I took the shot from the Carlton Centre, our tallest building (usually cited as the tallest building in Africa).  In the far distance, on the horizon, you can see the Brixton Tower.