I will rewatch again to see the changes in the character designs that you have mentioned.Interestingly enough. I will update this post after I finished watching =D A good job !
wait, there are 2 hair-pin in the character page for
Neville and only one hair-pin for
Amuria. Fire in the hole !! inconsistency in the character designs! =P
edit:
woA @ Yui From Okinawa
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episode 1: It's the same as the character design page on the site,Amuria wore 1 hair-pin on the left side of her head.