Stop in for a cup of coffee

I need to take the seats out and start messing with the carpet, any tricks or things I should be aware of? I assume for the shifter, only cut small enough for the handle then put the carpet around then screw down the trim ring. I have dynamat I will pout down first.
I assume you know about using a wood burning tool to make the holes for the carpet .Depositphotos_44977003_xl-2015.jpg