What you need to do is 'map' it to the layer. or bump map it
Here is a example of bump mapping.
https://www.youtube.com/watch?v=2ot6I7frxZA&t=7s
I just did a quick one
[attachment=8234]
Here is a example of bump mapping.
https://www.youtube.com/watch?v=2ot6I7frxZA&t=7s
I just did a quick one
[attachment=8234]