What makes art really underground? Lack of fear for imperfections and thirst for damaged visuals. It looks obvious when we make mistakes (by smudging a scan, ofc), but we end up liking every ooze of light stripes.
Don't chaotically seek old scanners to prove this statement. You are lucky to get a pack of 16 hi-res handcrafted textures, which give the illustration a real e-MOTIONAL vibe. The image stops being static thanks to distorted laser leaks running around it. How to use it? You literally overlay any texture (or even several) on your picture, dabble with the settings, and the grungiest grunge. Are you working on bold posters and ad campaigns? Awesome, the result will never disappoint you. You got a task to customize a brand identity lookbook? Count on the pack!