the way i did mine was
Start by ripping out the entire interior. Im talkin seats, carpet, plastic door panels, the dash, the whole works.
Next clean it REALLY REALLY good with a biodegradable, non residual degreaser/cleaner. let it dry.
Buy 4 bulk packs of Dynamat xtreme, 3 cases of dynaliner, and 5 gallons of Edead in whatever color you prefer.
Start by applying the Edead with a thick paint brush to the roof of the car, and work your way to the floor, and dont forget the inside of your door skins, and the outside. Repeat until its gone. All 5 gallons.
Next lay out your dynaplate on the floor of the car and cut it to fit.
Lastly get a couple fresh razors and one of the heavy duty rollers that dynamic control sells, and go to town on every panel possible.
Get out your fresh jute, new carpet, lay it down and start piecing it back together.
WALA! you have one of the quietest honda civics in the world.