You need to cut out two of the head pieces and four of the ear flap side pieces, 2 of each side, plus two of the front pieces. On my next hat it will have longer ear flaps than this pattern. My first attempt to make a hat was made out of an old wool sweater that was accidentally shrunk in the wash, after cutting out the pattern and sewing it all up, the pieces worked and the hat fit. I also used the same wool sweater and cut a strip about the same size as the ear flap strip and sewed it inside the lining of the hat as a head band, it helps hold the shape of the hat and is comfortable on the head, you can also use any kind of batting for the head band.
The lining is what finishes the inside of the hat and hides all the seams, it also makes wearing the hat comfortable. The liner is made with the same pattern for the top head piece. For the liner I used a piece of nice quality nylon that would last a long time and not absorb moisture. I thought about the liner and different fabrics I could use, on another hat I'm making I plan to use a nice soft cotton corduroy, you'll want to think about matching the color to the hat, for mine I went with black. Using pins to pin everything together before you sew is the best way to make sure it all works. Although fur as a lining against the head would be comfortable it might be too bulky, you will feel the fur around the face and the warmth of the fur is still there.
In the photo below you can see the muskrat fur I'm working on for my next hat, it's a gorgeous warm golden color which looks better on my husband than the cooler colors of silver in the American chinchilla fur. This leads me to my next post about the rabbits we raise in our rabbitry. We are now also raising Cinnamon rabbits so we have some warm tones in our beautiful furs.