That is probably because she isn't human ^ xD

and I am looking forward to seeing both your entries
uh, there isn't really any other pictures of her in that same art style but I can share this
http://www.lolking.net/models/?champion=28&skin=2
that is her in-game model, you should still use the art style in the first post's ref pic but this may help with something I guess
remember to get the colour of the lighter side in the first pic for the mask etc :>