I did similar when moving into a new uni room, best part of the fresher’s fair free pizza and new posters. I got a giant Pulp Fiction poster where Vincent and Jules are in the apartment pointing the gun, made the mistake of putting this up by my bed and led to a series of dreams that peaked with a vivid one of turning around on the bus upstairs to get shot by them causing me to wake suddenly and finding myself underneath the poster.
Switched up my poster selection after that, and lots more blu tack.