Measure the available wall space and any furniture positioned beneath the mirror. Above a console table, sideboard or fireplace, a mirror usually looks best when it is slightly narrower than the furniture below. Larger mirrors can also help smaller or darker rooms feel brighter and more open.

Wall mirrors work well in living rooms, bedrooms, hallways, dining rooms and dressing spaces. Position your mirror where it can reflect natural light or an attractive part of the room. When hanging it above furniture, leave enough space between the mirror and the surface below so the arrangement feels balanced.

Round and oval mirrors soften straight lines, while arched mirrors add height and architectural shape. Rectangular mirrors suit larger walls and dressing spaces, and ornate, sunburst or window pane mirrors create a stronger decorative focal point.