Jouf, what a beautiful hat!
My niece has just started knitting a very similar felted hat. It's also knit from the top down, but starts with 12 stitches so there is a bit of a hole at the top. Do you think this will "felt out", or should I suggest she gather it up like one would do to finish a hat knitted bottom to top?
Thanks for your help. My niece and I just talked about her "hole" this morning, so I'm delighted to find your post.