How to make a varnish transparent effect? I'm working for a company and I have to create something in 3D with a varnish effect on it. I can't show you the product but I can show you what I want to do thanks to my business card:

I have a layer of varnish on my &quot;glasses&quot;. I want to do that. I tried different things, transparency, alpha, transmission... I just can't get it right. It came up too dark for most of the time. Sure, I tried to just pop the image texture on it again, but it's a lot of work and I have like 15 different products with differents varnishes to put on it.
Can someone help me?
Thank you!
P.-S. I'm not a native english. Sorry.
You could create a mask for the area that is supposed to be glossy:


then plug it into the Roughness factor of the Principled BSDF. Mix it with a bit of noise if you don't want it to be too clean, and use this setup to create bump if necessary:

it should work: