its simple just take times con unas beers and some music and patience they will come out good.
take off the headlights*
Hair Blow Dryer, put it on setting hot, warm, cool,cold
Hair dryer so you can take off the stock silicone thats around the headlights* you put on "hot" they well start to open apart or get loose.
Get a knife or a flat, spatula, to take the stock silicone off just prie open the headlight cover with the reflector by this time the silicone is kinda loose and cover well come apart. will take like 1hr to do both headlights.
materials> blow hair dryer, flat head, knife to scrape off all the old silicone. and brand new Plastic Silicone "clear" from auto partz store.