Going by memory:
The black, plastic, headlamp bezel needs to be removed first - 4 small, black, torx head screws - 2 top and 2 side, see the side marker lamp for the latter 2. These are NOT the screws in the bezel slots - those screws are the adjusters! Remove the sidemarker socket and bulb by carefully turning it 90 degrees, then put the bezel aside in a place where it won't get broken.
Each of the 4 headlamps is held in place by a thin, bright metal retainer.
Each retainer attaches to a headlamp bucket using 4 philips head screws, 2 top and 2 bottom. These tend to "stick" over the years, so be careful to select the proper size screwdriver and that the screwdriver doesn't "jump" when you attempt to remove the screws. Push in fairly "hard" and turn - don't go gorilla.
Once the screws are removed the retainer comes away and the headlamp will be loose in its bucket. Unplug it and plug in the new one. Then put everything back together opposite the way you took it apart.
Tips:
Don't mess with the headlamp adjusting screws - don't mistake these for the screws that hold the headlamp retainers on. Get a flashlight and look before you leap. The adjusters have tall, round, philips heads. There are 2 adjusters per headlamp, 1 top and 1 side. See the 4 slots in each bezel.
Don't overtigthen anything associated with plastic - it'll crack.
You may want to use a little WD-40 on the headlamp retainer screws to keep them from sticking down the road.
There may be a scammer brown sealer on the headlamp socket. It's to keep moisture out. If you have some handy, be my guest.
strike