Light, both artificial and natural, will transform any space. You can make small rooms become open and airy with large volumes of diffuse light, whilst large open plan spaces become cosier and more inviting with intimate layers of light centred around seating.
Illuminate one wall with an asymmetric wash of light in a narrow hallway to push the wall outwards making the space feel bigger. In areas where the architecture is dull, introduce playful non-symmetric lighting details to add interest.
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