Stylized iridescent shader Practise

I created this Shader by following a tutorial by Arnold Renderer: https://www.youtube.com/watch?v=gxqA-idpcIg.
Arnold Renderer Channel Link: https://www.youtube.com/@arnoldrenderer.
I applied the shader on a movie camera asset from Adobe substance 3D Assets website: https://substance3d.adobe.com/assets/allassets/eb9281d40787949b272ee449014edba1481a7c59?assetType=model&free=true&sort=-updatedAt.