do not change anything else in the image keep everything exactly the same do not move the window the window position is already correct keep the window exactly where it is now only make the existing window narrower requirements make the current window thinner narrower keep the same height keep the same position keep the same wall keep the same curtain placement keep the same recessed wall geometry do not move the window left or right do not place the window anywhere else do not add another window do not change proportions of the room the window must remain floor to ceiling elegant narrow vertical window on the right wall in the exact same location do not redesign or change anything else only reduce the width of the existing window