Hey Spot! After you get the key, that will allow you to open the locked door on the show stage. Head there, and check out everything in the room to find a way ahead! There are also some wonderful playthrus done on youtube if you search Clearing Your Name FNAF by Dawko, FusionGamerz, and others, if you would rather see someone else do it/if you cant get ahead. Just watching a little bit can help you find out what to do next! : )