I love watching someone who is good at their work. They make fantastic results look easy. I guess the practice helps, and all the preparation that goes into making the end product.
The Guardian has a four minute video that shows Paul Catherall [^] working on a commission for Transport for London (TfL) called Shaping the City. This give you an idea of the skill, time and hard work that go into producing something that looks as good and uncluttered as these two prints.
And there are plenty more to check out at the Paul Catherall Site [^] and the London Transport Museum Shop [^]