There is a charm and challenge of small spaces. When done well, they can feel like cozy, Zen-like retreats. But often when you have to cram all your worldly possessions into one tiny space, the results can feel cramped, claustrophobic, and anything but restful. Achieving the former instead of the latter takes some conscious effort. The good news is that the key to successful small-space living might be easier than you think. It all boils down to tricking the eye into perceiving more space by employing simple concepts.

Here are few tips to make a room look bigger :

• Light colours make your room look bigger and brighter especially if you use them for your wall colours.
• Use multifunctional furniture to save space. Example – coffee table/storage spaces, sofa beds, etc.
• Keep your walking pathways unblocked to crate a sense of open space.
• Have your furniture in the same colour (or same colour family) as your wall colour.
• Push large furniture against the walls you want your floor space to be as open as possible.
• Always keep your space tidy and organised, clutter will always make your space look smaller.
• If you can, add a large decorative wall mirror or mirrored walls. If you can have the mirror reflect a window that shows the outside.
• Allow plenty of natural light into the room. Dark spaces tend to look smaller.
• Scale down the size of your furniture. Choose small apartment furniture.
• Avoid over decorating your walls; rather, have one focal point for people to focus on.
• Use clear things (as opposed to opaque things) : glass tabletops, sheer praperies, clear shower curtains, etc. This adds the illusion of more depth and space.

Reference : https://img.wonderhowto.com/img/07/69/63473299515027/0/11-ways-make-your-living-space-look-bigger.w1456.jpg