How to add extra details to body part?

Hello. I’m creating skin material and now I want to add extra details to it, like pores. How can I do it?
I’m using UE5.5 so, I suppose, I can use bump offset or displacement, but I don’t know how to use it with separated UV.
For example, I need to add pores to nipples area and I have UV and textures for it.
My original shader from Blender is pretty simple:


But how to re-create it in UE?
I’ve created this:

But where should I connect bump offset? I’ve tried to connect it to displacement:

But in this case my character is just breaking вespite the mask:

Can somebody help me?