shower wall

The wall has been built but I am afraid I really think it is not
right. I think it would be better to build t up to the mezzanine where
it meets one of the beams. This way it will correspond to the walls
from the wardrobes. I know that in the photos it looks ok - but
believe me it looks funny.
Also the height for the gray I think should change. I think it should
go to the window lintles.