When I heard the theme "urban sketching," I thought immediately of this building in Philadelphia. Isn't it fantastic?!
But, I wanted to take a stab at this building. It's certainly "urban," right? So, I pulled out a sketchbook, sharpie and pencil and opened my blog to the page with this image.
I started with grid lines drawn with a pencil, then marked in the shapes of the windows with a sharpie.
I put more detail at the bottom of the drawing. On purpose or lazy? I'm not sure.
Then I added color with watercolors (which I have very little experience with).