First of all, are you jelly because her art is amazing? I think the credit doesn't go to the cosplayer, because the make up probably wasn't done by her, and the photograph was taken by someone else. The cosplayer should be happy because there's an amazing art of her by a talented artist. I would just scream if it was me. I tried to draw this art, I didn't trace it, I focused on the shading and coloring most of the time and took my time. And it end up really good. But hers is still much better and I don't think she traced it, if she did, then you also need a talent to trace it really good.