How do I Make Something Shiny?

So I'm making a card game, I'd like to make the high rarity cards have a bit of a shine or a foiling to it. I tried looking through the filters and nothing I did really worked, but I'm also not experienced with the filters on here. Is there any you all would believe would work or is there something else that would be recommended for this?

There's an example of this exact thing (plus some more fancy stuff) in the Example Browser. It's called "Living Card".

There's an example of this exact thing (plus some more fancy stuff) in the Example Browser. It's called "Living Card".

So Umm... how would I do this in a non-3D game? Or at a minimum use the Light Streaks themselves? As when I tried just porting them and any code relating to them, the black was visible.