As a part-time interior designer, your job is to help with the design and layout of rooms in homes or offices. In this role, you may help select the furniture and decor, determine the best way to use space, and decide the side of the room on which to put certain types of furniture. This job frequently involves managing requests from customers, which can range from using certain furniture that's already there to using particular colors to working within a set budget. Part-time interior designers often work in consulting roles at furniture stores, home hardware stores, paint stores, and similar retailers.