The expertise of a trained interior designer comes at top dollar, so heed this advice before shelling out your hard-earned cash: Most, if not all, home decorators incorporate the same design principles when furnishing and designing a room. You needn't possess a degree—nor a keen eye for design—to apply these rules of thumb to your space! Here are two simple rules to follow:
1) Add round shapes to create visual interest.
Because most furniture is made up of 90-degree angles, be sure to soften these sharp angles by introducing round shapes into your design. This curvature can come from circular-shaped throw rugs, round accents (vases, frames, collectibles, pillows), and lighting fixtures.
2) Think big.
While you can certainly draw inspiration from a smaller collectible, always start the design process with larger pieces, then work your way down to accents. For instance, if you're designing a living room, begin the design process by choosing your sofa and rug, then progress incrementally to smaller and smaller pieces, finishing with accessories.
10 Secrets From Top Interior Designers to Better Your Home [Freshome]
Timeless Home Decorating Tips [Real Simple]
The 7 Rules of Interior Design [Zillow]