Rosson3ri

So i decided to change all interior lights to LED.

And i am having a hard time with the rear passengers lights.

I was able to take the plastic cover off and install the LED light but not sure i removed it correctly. I cant seem to put the plastic cover back on. lol

Does anyone know how to do this? ....was i supposed to remove the entire rear vent and light panel first?

Please see some pics below.

Thanks in advance