To render a true-looking interior, it's an art of balancing material and light as well as the perspective of composition and perspectives.
As an interior designer, 3D interior rendering could be your favorite task. It could also be a source of all-day nitpicking, irritation, and frustration.
In smaller, intimate spaces, even the tiny changes in light and shadows can have a significant impact. The arrangement of objects or materials can transform a scene from awe-inspiring into "meh." Also when done correctly the composition choices you make will give the scene emotional and mood.
Image Source: Google
What makes the image above "authentic" and realistic is the combination of various 3D internal rendering techniques.
The first and most striking feature is the light streaming through the window on the glowing green plant. This is the main primary focus of the image, attracting the attention of the viewer.
Behind the couch and on the back wall, you can see a balance of light and shadow. The shadows are less vibrant since the sunlight takes over. The position that the shadows are behind the sofa and their relationship to the sun, is an authentic element that adds authenticity to the image.
Consider throwing pillows on top of the blanket, and the magazines that are openly placed on your coffee table. The objects and the materials are thoughtfully placed and emphasize the personality, characters, and lives of the people who live in the space.