Leather is sold by the hide, and a sofa this size needs several - which is where the real work begins. Hides vary in thickness, in grain and in colour from one animal to the next, and even across a single skin: the back is denser than the belly, the neck carries more marking than the flank. An upholsterer who cuts a large sofa without accounting for that produces a piece where one seat cushion is visibly different from the one beside it.
So the hides are laid out together and read before anything is cut. The most uniform sections go where the eye rests longest - the seat cushions and the centre back. The flanks go to the outside arms and the underside of the chaise, where variation does not read.
Our master Indian artisans do that selection by daylight rather than under workshop lamps, because artificial light flattens exactly the differences they are looking for. It adds a day to the job and it is the difference between a leather sofa that looks made and one that looks assembled.