handmade rattan flower: https://www.potterybarnkids.com/products/rattan-flowers/?position=11 

In the archive: obj file, 3dsmax 2018 Corona physical + legacy, Vray. Materials were converted to V-Ray using V-Ray scene converter. Scene in mm.

The Turbosmooth modifier has been applied to the model (viewport display - 0 iterations, render - 1). Increase or decrease the number of iterations if necessary.

For Corona Render: it is recommended to install version not lower than 1.5, since the glossiness of materials is configured taking into account PBR.
Those who work in V-Ray version 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 - what is for you preferable.