New Front and Rear Carpet and how to Insulate the Floor

[Skibb]

Now its time to order an interior for our restroation, I have a deposit with Lebaron Bonney (who I too call Labron Bonney). But, we also want to insulate; so how do we insulate the floor? On top of the floor boards then lay carpet or insulate on the bottom.

If we insulate on top of the floor boards, wouldn't the capret appear misshaped ?

For the Firewall, I've read on the Barn that with stick on products, a color similar to the firewall's is used to mask the insulation.

thanks in advance!