The two rolled ends on this diwan cannot be covered with flat panels, because a scroll is a spiral and no flat panel will wrap one.
Try it and the problem shows immediately. Bring the covering round the outside of the roll and the material has to travel further round the outer curve than the inner one; the surplus gathers into a fan of creases at the centre of the spiral, exactly where the eye goes.
The traditional answer is to treat the end of the scroll as its own surface. The main covering is brought round the roll and stopped at the face; a separate circular panel - the scroll face - is then cut, eased into a disc, piped around its edge and stitched in place to close the end.
Cutting that disc is the skilled part. It is not a flat circle: the face of a scroll is slightly domed, so the panel has to be cut a little full and worked in around the piping until it sits without a single pucker.
Two scrolls, two faces, and on a patterned brocade both are cut so the motif sits centred in the disc - matching each other, since on this piece both ends are seen together.