Smear a very thin coat covering the bare steel on both the fender skin and the body. Then put two thick beads around the bonding points to get a Good Squeeze Out.
This is to make sure moisture can't get in.
ALSO have Someone Help You, and hopefully you did your several test fitting before this point, AS....
ONCE you set it against the body, you can slide it into alignment, BUT YOU CAN NOT LET IT LIFT OFF !! Air Bubbles and Tacky Points will not let you set it on straight !!
Being my First time doing this I got Happy Krazy with the Clamps