Very deep
Now this was some very deep shades of shading and the eyes really came out very well the eyes really draw you in and on that note I think a form or suggested idea would be have the eyes colored and the rest black and white also adding some borders and or frame on your canvus would be another positive suggested idea but you do have a nice drawing here
~~THINGS TO IMPROVE ON~~
Some extra elements of color and or frames
~X~