I really like the mood of this shot, very gothic. IThe lighting is also excellent for the mood but find the lantern is a little distracting. Keep up the good work.
Nice shot, but I think it could be better. It doesn't seem as sharp as it could be and I think the back lighting is a bit too strong. The faces don't seem to contain enough detail to make it a great shot.
I would recommend first, getting closer to capture more detail within the frame -- You have a good camera and a nice lens -- This should have a lot more detail. Additionally, you can crop this a bit -- I think there's too much top-space in the frame here.
Photography is more of a study of light than it is a study of how to use a camera. I think the lighting here is neat, but doesn't allow enough light to fall on the models faces. Experiment and take lots of shots from different angles and perspectives and some will turn out better than others.