The palette
Water is a single band here, but a long one: the horseshoe runs from edge to edge. Give it an ink that stands clear of the dense streets on both banks. Green is plentiful and scattered, small patches all over the sheet rather than one great park; a light tint keeps them as texture, a stronger one turns the sheet into a mosaic. The motorway ring needs nothing more than the darkest line of the palette: after the river, it is already the boldest figure.