To start using the rule of three today, begin by decluttering a small area like a coffee table or shelf. Then select three objects that differ in height and texture—for example, a book stack, a bowl, and a vase with branches. Arrange them asymmetrically to create balance. Next, try grouping three framed prints in a simple gallery wall or introduce three pendant lights in your dining area. Focus on odd numbers and varied sizes for natural appeal, and trust your eye to build rhythm and calm in your rooms quickly.