Set for arched window 2000-2200 mm.
Arched curtains with goblet pleats with tiebacks on both sides, double tulle, and a Roman shade for the arched window.
The scene includes a simplified model of an arched window in the wall and a simplified model of the cornice for example display of mounting.
The curtain set is grouped for convenience. In the export file, all objects are ungrouped.
The colors of the model can be easily changed in the material settings.

https://3dsky.org/collection/shared/5255126  collection of my curtains.

For Corona render, it is recommended to use version no lower than 1.5, as the glossiness of the materials is set with PBR in mind.

If you are working in V-Ray version lower than 3.1, please be careful, in the materials in the BRDF section, Microfaset GTR (GGX) is set; if your version is older, the BRDF field will be empty. Choose Blinn, Phong, or Ward – whichever is preferable for you.