I'm very much so a beginner at certain blender concepts, especially nodes and textures. So I ask kindly for your patience. I have a model that I want to add a shiny speckled texture to all over, that only shows up in areas most saturated by light when the viewer is looking at it. I am making an avatar and I found another one with this example :

[![enter image description here][1]][1]

And I've just about given up with trying to research for how to do this elsewhere lol any help is much appreciated.


ive been experimenting with the textures and i have a few ideas for the texture itself, but i dont know how to get it to follow the light source/only show up the light source like in the picture provided. much thanks


  [1]: https://i.sstatic.net/f5sYcDt6.png