Currently the housing is just the two parts without any clips or whatever, to hold them together. So I just put the camera in and glued them together.
Update: Using the new bottom part (v2) it actually sticks a bit together, but anyway it's also more easy to glue the two pieces together.
Also it's not possible to tighten the reflectors when they get lose (they're just clipped on and not very tight).
This is the camera I used:
Holder for FlashForge Creator Pro: