it looks really great and solid.
I think maybe yo can add a little more detail in the clothing in certain areas (chest, for example)
I'm not being a perv, it's just that with the wings, and all of their glorious linework and detail, the chest looks like this open expanse of white. Good fix on the foreshortening.
Maybe the empty space thing is something that can be corrected in the color stage? I don't know what you have planned. Maybe some textures or patterns, or with shading.
It looks great. I'm just trying to be constructive cause I think you can make it look amazing.