I don't have a patient hand when it comes to drawing. I tend to move the pen quickly and skip the details. My perspective is off, my lines are crooked and the drawing is typically made on something ephemeral, like a random scrap of something. And then I move on.
The sketchbook of Mattias Adolfsson is the opposite of mine in every which way. There's tons of detail, patient lines, and incredible depth and perspective. I'm still trying to wrap my head around how this is all done within the confines of a Moleskine sketchbook. Below is a selection of my favorite and it goes without saying that you should visit his site and see them in even greater detail.