This is great! It's great seeing things from the book that weren't captured so well in the movies brought to life in people's awesome art like this. I love how Ginny looks especially! Her expression, and that necklace!
I tried to draw this in my sketchbook (don't worry, it's not posted anywhere because I think it's awful) but I messed up Ginny's nose. I would kill for Ginny's hair in this picture! The color/shading is beautiful.