How to attach the wifi antenna to the logic board?

Replacing an lcd and glass on an iPhone 4 and when i am putting everything back together, i cannot get the screen to light up at all. How does the wifi clip attach to the logic board, there's a stupid metal clip under it with a prong up and a prong down, how does this fit being that theres all the connections there? does it go under it?

without this i tried turinging the phone on and it is vibrarting and itunes says its disabled? but the screen is black. what am i doing wrong.

please help me