High level brake light

Tried to change the bulb in my centre brake light earlier today. After getting it out and replacing the bulb I can’t seem to get the housing to fit snugly anymore and it just rattles around. Any ideas?
 
check you have put the metal clips in correctly and also make sure its not been put in upside down (Both light & Clips)
 
check you have put the metal clips in correctly and also make sure its not been put in upside down (Both light & Clips)
Thank you. Managed to get it in properly (ish) now. Needed to bend the little securing tabs on the clips in a little so the clips didn’t pop off the light.