The only critic I would make about this, is it all kind of blends in. You want Sonja to stand out a little from everything else- she's the star, the draw to get you to look - and right now, everything is a part of everything else- I don't know if I'm making myself clear. Sonja should be coming off the page- but I'm not getting that 3rd diminsonal feel, if that makes sense.
If you can seperate Sonja - layer-wise- from the rest of the image- what you might try to do, is place a layer of black- say about 20%- between Sonja and the rest of the image. That would make the environment pull back some and give Sonja the spotlight.