This is an alright drawing. Not something that I would put on front page news or anything, but it shows promise and mediocre skill.
Proportions - This is the area that I can see the largest amount of flaw in. The proportions seem odd and far too distorted, taking away a certain element of realism from the picture entirely. The chest and eyes are the areas where this flaw is the most obvious.
Dimensions - This area could also use improvement as well. While the picture was drawn in an acceptable style and form, it just has a very flat feeling to it that needs to be remedied to further develop the picture so it will look more real. The body isn't rounded enough in areas such as the chest, eyes, and face.
Detail - This was done well, I enjoy the tone that you have put on the character's skin, which gives it slightly more depth, improving it and making up for the lack of dimension and proportions. You might try giving the skin a more rough feel, to make it more realistic.
Eyes - This area could definitely use some improvement. The eyes felt flat, and 2D, which forces out another element of realism that could have been easily used to draw the viewer in. Try adding a shining element to the eye so that it reflects light and gives it a feeling of life.
Overall - It's an alright picture, but it is not the best. There are obviously areas that could use improvement, but overall this is an acceptable piece of art.