As an interior designer, how to process the work space is cramped and dark (eg 3x5m size) into a space that is comfortable and spacious like ..?

NHF, but in this cubicle-time,3x5 m working space is already spacious as it is. But:

- paint it white

- remove unnecessary furniture/cabinets/tables/hangers

- use shelves instead of cabinets for stuff you can (shelves are more "spacious" for books but not suitable for A LOT of files/paperwork)

- replace plants with smaller ones (plants are nice for an office, but you dont need a tree in there)

- Freshen the air with purifier/humidifier

- hide the computer cables

- use wireless equipment (phone/printing/keyboards/mouse)