There are simple steps for designing small spaces
Work within limits:
Too much furniture will turn a comfortable home into a problem way so try your best to use minimum space in an effective way.
Bare surfaces enhancing line and length, but more beautiful objects help to direct the eyes.
Unite your look:
It is very important to unite all your space in an effective manner. You can treat your whole area as a single entity to manage the small space.
Lighting is also plays an important role to manage the small spaces. So use lighting to design small spaces.