The carpets were made using the technic you can find on the tutorial section (alternative way to flock interiors). I use it to make the carpets and paint them because I don't have dark gray flock (I'm using flock originally intended for creating foliage on model trees, but under some paint it looks ok and have a rougher texture than "auto" flock which I think is ok for the texture of carpets).
Here are some photos of the (more or less) completed model (I'm still trying to minimize some of the orange peel):
Cheers
Marco Preto