The aesthetic feel to this is just great... The fonts are just so so good...
The detail in the faces are so well done too! Even the touch of the muscles in the neck is great!
However, the "Lady on the bike" in the far left could use some touch ups, its looking very botchy in ways of form so far.
I would love to see this finished, and in a sort of wallpaper for my computer.

This just keeps getting more and more fantastic!