Sound Insulation installation

Hey guys, I am in the process of adding in more sound insulation in my car. I am using Second Skin Audio products.

Products include Damplifier, Overkill, Luxury Liner, and Heat Mat

the site:
http://www.secondskinaudio.com/


The question I have is I'm having some trouble installing the product on the firewall, not the passenger side but the driver's side. There are so many things obstructing it. What have you previous installers done?
 
it was a pain to put it in my car but i just ended up laying it down, trying to not get it to stick to everything and then taking a well crap i am drawing a blank haha ive used it thousands of times in my life....ill just say razor blade knife because i am being stupid but anyways i just cut out little squares around the high low switch and such and layed it down as best i could...i dont know if my confusing post will help but it had sum wrinkles in it but it turned out pretty nice