How do I attach a License Plate to the front of my 2007 Eclipse?

I bought a license plate attachment kit to attach a license tag to the front of my car...we can't figure out how to do it!! We have the bracket and the screws but we can't figure out how to get it on there. The bracket came with screws and they have a rubber backing on them but there isn't a way to attach them to the car. how do we get to the backside of the bumper to attach them? It is crazy!! thanks....please help if you can!!