In the first image I've made all the progress I'm going to make in pencil and I've jumped into inking.
I based this shot on Tartine Bakery here in San Francisco. I could have gone over there and taken my own reference photos, but Google has done a great job already. Street view is a pretty good tool for this. Helpful and creepy in the way most Google aps are these days (Hi, NSA!).
And here's the "final" version (final for now):
Ok, back to it...