Sorry to confuse you. I didn't take pics,

my bad. When you remove the 8 (8mm) nuts the whole center portion containing your reverse lights will come out. The part that actually rattles, (at least on my camry) was the outer "shell" of that center assembly. The plastic piece that actually has the C A M R Y letters on it comes apart from the part that bolts to the physical trunk lid. 4 philips screws and three plastic tabs hold them together. Try and do thin strips along the outer edge, that's what I did to make it nice and solid... as well as larger pieces all over the panel. Nice and solid and no more "bass rattles"

I also took the liscense plate off and put a large piece across the back of that. Hope this doesn't make matters more confusing.
Jay