During my initial trip to New York to select all of the interior furnishings for HGTV Dream Home 2016, my team and I worked with a design studio on employing our collective editing skills throughout the process of layering. 

As far as layers are concerned, it's not really about having lots and lots of objects as it is a mix of materials, finishes, sheen and textures artfully arranged together in the same space. 

Anytime you're making many selections, it's wise to have an extra person with you to bounce ideas off of. 

A well-layered room has different shades of the same color introduced with textiles and accessories, metallic, wooden and/or stone objects ranging in size, shape and scale, underfoot textures found in both patterned and solid rugs, and an interesting play on soft and coarse surfaces.