Three plastic rivets in each fender well, reach your arm in behind it, and wrench away.
Facia removal is easy, just a bit time consuming.
I guess I wasn't too worried since I had the almighty (aka Freebird) standing next to me helping me along. hehe W/o him, it probably woulda taken me 3 times longer only b/c it was my first time. I hear ya on the 'not wanting to screw up other things' hehe Its always a concern in the back of my mind.
You got a lot of guy up there near ya who I'm sure would be willing to help you if you wanted. A little free beer and/or food goes a loooooong way
G'luck.