Choose a light room color
Using light colors in rooms generally make them look bigger. Bright walls give off an airy feel, whereas dark walls would make a room look smaller. Go for a soft tone of off white. Bonus: if you have wall trimmings, paint them in an even brighter white to make the room look even bigger. If you have a space with minimal windows, paint the ceiling a lighter color too in order to give the illusion of more space.