I like your last photo, specially because I'm a fan of both the cosplayer and the costume maker, Steve Wang. Composition wise it is solid, giving the subject a powerful stance accentuating the legs due to the perspective. However, I don't think the tilt is signifficant enough to even be noticeable. The perspective lines overpower whatever additional angle was created by tilting, in m opinion.
I wish I had something else to contribute at this time, but I'm posting from my phone. Cheers!
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