So here was a nice drawing the linework is notbad, it looks very real I can imagine this was a great end project and you have done very well with this, I normally would suggest some backrounds here but you honestly dont need it, very good sketch and drawing here so nice work on this one.
~~THINGS TO IMPROVE ON~~
A colored version or parts of this in color would be awsome.
Nice portrait! Looks detailed and realistic, though some of the facial features could be defined a bit more. Eyelashes for example really gleam in their nonexistence, as does the inside of that one ear. The faces look unnaturally clean as well, even though their shaded, and the eyes look a bit sharp, maybe not watery enough. Overall it's looks good though, a lot of detail, and a different angle of drawing. Keep it going!
Okay man, thanks for the advices :D I'll try to do that in the next ones :D