no heat gun for me, but when i did the headlamp clearbra i used
a heat lamp to make the material very soft.
after install i let it bake under the heatlamp for a good 4-5hrs
since it was cold/wet outside.
install is cake, you need to be very patient. also there is some
pulling involved (stretching over bumpers) so that's where things
might feel kinda foreign to you if you've never done one before.
otherwise my tip of the day is to keep your fingers wet while
handling the adhesive side.
otherwise you will end up with
finger prints.