You did an amazing job on this.the only thing i could give any contructive criticism on would be the nose. The light source is a off making the shape of her nose slightly off.and by slightly i mean anyone that isnt an artist would probably never see. But your VERY talented.
I am really impressed on your pencil work, If I still worked for Marvel you would have been hired right away by Stan Lee he loved that type of pencil work you do. BRAVO!