2002 S'Crew Lariat FX4

I'm in the middle of attempting to remove the grill/light surround of the front of my truck, but am having extreme difficulty in doing so. Is there some special trick to removing this?

I've removed all the screws I could see, but obviously there are some hidden quite nicely out of view.

Can anyone help me locate them?

Thanx.

 

behind the markerlights and under the grill there are some clips.