In my picture it's just a quick photoshop of what it will look like =)
When you wrap it in vinyl, it's a little easier to do it when your bumper is off and you only have the grill to work with.
Many people wrap the vinyl with the grill on their car which turns out great too.
I'd use an adhesion promoter because the two slots that run horizontally on the middle grill pops the vinyl back up.
See can see the "slot" in this picture.
Wrapping vinyl is pretty easy itself.