This is a very eye-catching work of art here! It has great perspective (which is tricky to do from this particular angle), at has good coloring and shading, and the detail is great! This is something that can easily be on a poster or a book cover. The fog is particular interesting, as are the ghost characters. They create that cyber atmosphere you feel at a concert and are also an interesting blend of sci-fi and the supernatural. The wings, the virtual wire, and stick are quite cool as well. The lighting is good as well since it shows on her but there could be a little more on her to add to the concert atmosphere. Maybe have a spotlight on her with darkened shades for effects. It's still an awesome and creative image, just continue experimenting and practice getting all of the details down.