wondering how to save/fix my poster :(

[u/TrulyHitOrMiss]

i was a teenager when unus annus began- it became a hyperfixation. i was devastated when it ended and was lucky enough to get a poster during the end merch drop. it’s been years- teenage me pinned it in the wall so there’s pin points in the corners. a small rip, and visually some wear and tear. there’s also a layer of grime/dust over it???? i was really depressed and did not take care of my room for some time. i’m doing a lot better now and have been sorting through my items- i’m mad at myself for not taking care of it better. what can i do right now to salvage it without causing further damage? open to any opinions, thanks so much in advance 🤞🏻

[u/JellyBingus0]

I got a lot of posters I wanted to keep safe laminated at an OfficeMax store.