keep in mind: Actual size of this detail area is approximately 2 1/2" x 1 1/2".
Here you see the entire building construction crane in the lower left background area,
and the flag that is not visible in the framed piece.
1) light burnt-yellow-reddish wash, 2) darker, browner washes on shade side of tiles.
3) dark shadow lines on each tile, & shadow of tiles along the roof ridge.
4) very thin lines on each tile to indicate the circular contour of the tiles' shape.
5) various washes added to intermittent tiles to show deeper red, or brown, etc., per tile to indicate aging, different tile batches.
CHIMNEY brick would have been painted white years ago,
and has worn off near the top, exposing the brick underneath.