This is a piece of work of a canal in Amsterdam. i made a rubbing with pencil of a interesting patterned wall to create a base tone and then worked into it. This helped focus on tone and create interesting textures.
I don't know why, but I had to make yellow buildings. I wish I had more time on this, but I took it as far as I could and hit submit with 1 to 2 minutes to spare. Why do I do that to myself? Anyway, I hope you enjoy.