Let me first say that I love your cosplay of Ruru to abselutely no end. It is so perfect!
Second: Would you be a sweetheart telling me where you bought the light blue fabric of the jacket + skirt? I'm sewing a costume for a musical at my University and the type of fabric + color is really something I had in mind.
Everything works well in that picture, especially the light, the background and of course the model. But the photographer did an excellent job, the composition is absolutely great. I love the costume as well and the fact that you can't see the eyes.