Shouldbeasy,
Now you need to finish the deadening
Nice work but I wish you had seen my HOW TO guide in my site, raamaudio.com.
If you line it with some ensolite foam it will be far better.
In fact less mat and Ensolite combined, per the HOW TO guide on my website would of saved some time and weight.
Matt products are needed but only serve a limited purpose and do little to help on already solid surfaces so I only use it as needed to seal up access holes like the ones under the hatch trim panels, doors, pillar holes, and on resonate prone areas.
Then I use Ensolite over most everything I can get to including back of trim panels, hard surfaces under seats, under the dash, etc....
So you know I have a pretty good idea of this I have shipped tens of thousands of orders around the world for 15+ years, have been a competitor and judge, know many of the all time top installers, guided quite a few into winning world titles and wrote at least 1 million emails helping others decide what will work the best and have the best customer service reputation in the industry.
I most highly recommend adding Ensolite, it will make a big improvement over the work you have done.
I am retired, this is meant as a helpful post far more than a sales pitch, I promise
Sincerely
Rick