Hey, I’m sorry for the late response, I didn’t see your comment 
So dirt mask Idea was a total bust because when I used a black mask, the black just becomes transparent.
I would like to avoid putting something in front of the camera, so I would really appreciate if you expand more on the first idea.
I’m not very familiar with shaders unfortunately.
Also a quick note, I’m thinking about adding the effect as a UI element? Any critiques on that?
And thank you for taking the time to help 