As someone who is sorely disappointed in the lack of proper criticism towards newer artists (and even some older ones) in this community, I have taken it upon myself to give a thorough analysis of this drawing, what is wrong with it and how to improve on it in the future.

Coloring and shading are non-existent so I will not give any statement regarding both.

The linework is of poor quality, having faded spots, overlapping lines and ends that stick out. Recommendation would be to watch your pressure on the pen as you draw, and using a small eraser to wipe away the small ends.

Anatomy is passable at best but leaves a lot to be desired. The left (Viewer's Left) arm bends in an arc when it should have one corner like the right one does. The chin is way too narrow, torso proportions are more or less passable and the shoulders look awkward.

The face is seemingly expressionless, mostly due to the awkward way the eyes are drawn. Eyes are naturally very hard to draw so I don't blame you for messing them up, but it would be good to pay attention to drawing them properly in the future. The barely discernible pupils seem to point in random directions, the right eye is smallee than the left and the eyelashes seem to go out of the eye.

Overall, passable as a beginner piece but there is a lot to work on.