Attaching the Dome Tray to the Dome

As you can see by the pictures you first tape the tray to the dome, I suggest masking tape as it peels off easily and leaves no residue. 

Here you can see from the inside where the tray sits on the dome, and the little bits of light shining through. This is the area that you would glue.

This is where it becomes tricky, and you have to go slow. I literally had to stick my head and my arm inside the dome. I spun the dome as a worked in the hot glue to make sure that I got everything covered. (Noting like having your head up an Astromechs dome!)