Answer : Good interior design incorporates an individual's personal interests and style with the space. Space can be divided up, to open it up (or close it off), and make it feel larger or smaller. It can have a livelier look by incorporating furniture without so many walls, matching colors for fabrics on chairs or pillows, or making small windows less noticeable with fabric around them. Ultimately everything you do in order to take an empty space and breathe life into it has some effect in your moods and emotions.