i dont remember much of the costumes, except they were black. nothing special about them to me, and THAT disappoints me =\.
i HATED the fact there was no sphinx!! i wanted to see such a cool magical creature come to life! i hate when movies skip good parts from books... well they always do that....
i LOATHE the movie because it seemed so dull and forgettable to me. ALL the good parts were gone and they messed up what was left of the scenes in the movie. i especially thought it was lame when the death eaters swarmed around in dark smoke and order of the phoenix members swarmed in white. not as fun as watching a bunch of wizards and witches shooting colorful spells at each other.
i think all three of the main characters are played great and exactly as i imagined, but personally, neville is the one i think was best resembled. he was just like i imagined, with the slight buck teeth, kinda vague expression, and his "put my head down so no one will notice me" personality. but as he's getting older, he seems to be getting braver looking and more mature, which of course, is needed in the movies to come.
UMBRIDGE!!! wasn't umbridge supposed to be this mutant toad with a froggy mouth and about as wide as hagrid but 4 times shorter??? in the movie, umbridge seems horrible still, but its somewhat softened by her lack of "umbridge-ness". i wish they got an evil fat lady to play her. it would have been WAAAAAAAAAAYY more realistic.