To be really honest, this picture confuses me. I can't tell if the face is meant to look more animated, or if it's been heavily shopped, since the rest of the cosplayer's figure seems realistic. And the flowers layering over her body is too much. There's so much going on around the top that it overwhelmed me. For future reference, I suggest you tone it down a bit, and avoid so much photoshop on the face. She seems to be a beautiful woman, but all the editing just ruined this.
I just love the way Artemis looks in the background; it reminds me of those drug-infused commercials where the cat eats its food and ends up in weird dimension where rotissery chickens dance and chinese boats lead to a sea of prccessed tuna!