Very nice - I had been wondering what NFT used for mane fur would look like. Someday, perhaps, I will have my fursona (see my avatar image) done, with a mane nearly that long, out of NFT. I know how much it costs, already priced up 6 sq. ft. of it with them, including the setup fee.
As the person that owns this mask, the majority of it is NFT fur. That fur is just like standard lengths if fake fur. She just cleverly cut it and applied to lay to the desired angle and such. Other areas are suplimented with standard fur for filling and desired look.
The fur detailing on this head is amazing. The way the cheek fringe fades into the mane itself (both length and colour-wise) is really lovely. The maw itself and colour texturing is very realistic. I hope your client was pleased!