@Froomball: I'm guessing Echo is like 5' XD Anyway... the shape of your face is not a big deal when it comes to cosplay, BUT face shape can help you look a lot more like the character you're cosplaying. There are ways to... 'change' the shape of your face like Hair style for example. The shape of someone's face varies with different hair cuts. In Oz case, his hair style on you will probably make your face look a bit rounder.
The fluff on Oz's hair as me stumped though... ^^; *fails at wig styling* Maybe you should post this question in a new thread in the Wig styling forum
Katara fire Nation outfit from Avatar: the last Airbender (100%-finished)
Kasane Teto from Vocaloid 2 (100%-finished)
Planned for 2010:
Ciel Phantomhive from Kuroshitsuji (tentative)
Echo from Pandora Hearts (tentative)
Agitha the Bug Princess from LoZ: Twilight Princess (0%-planned)