This is very beautiful! What type of pencil did you use?

im curious, why did you leave the hair blank? you have the line work there, even some faint basic linework in the hair area itself as if you had planned to do it, however you've left it perfectly white, so im very curious why you chose to do that?
a couple faults, that i noticed anyway, in a few areas your background shading has clipped into the image itself, the cloth hanging off her left arm, under the hand, it seems rather flat, lacking body and the linework doesnt really do it justice as i'd expect
and finally the shading on her right leg isnt as smooth as the rest of the piece and as a result it gives it a square and almost unatural feel that you've captured everywhere else
otherwise, excellent shading as i've come to expect from you, and the form and picture is really well done as a whole :)