Decorative panels Fisshion from Corner Design (3 pieces)
https://cornerdesign.ru/shop/fishshion 

Abstract art in the interior is always a great choice as its basis is non-objectivity.
In such decor items there is no clear visible plot there is no certain limiting style. Especially in a modern interior such paintings and panels look harmonious and stylish.

Objects are attached have logical names of materials and textures
I recommend adding TurboSmooth for close angles

For Corona render it is recommended to install a version of at least 1.5 since the glossiness of materials is configured taking into account PBR

Those who work in V-Ray versions lower than 3.1 be careful in the materials in the BRDF section there is Microfaset GTR ( GGX ) if your version is older than 3.1 then the BRDF field will be empty. Choose Blinn Phong or Ward – whichever suits you best