Anime Drawing critique?

There are both good and bad elements to the drawing. For this particular one, if that's what your focus is, then I believe you would have been better served using something like Dr. Martin's ink to color it. If you tend to work on lower quality paper, then try to keep it to pen and ink, as anything but the very best markers and colored pencils tend to be a bit splotchy looking. The drawing itself is solid, however I question the choice of the stars tered about. You may want to try and incorporate more interesting elements in the background, or perhaps leave out the background altogether. Though it is fan art, copying figures from good Anime is an excellent way to learn to draw the figure without having to rely so much on a model. The generational interest in the Anime style of drawing will eventually give you a huge leg up in my opinion as you develop and continue to draw. On this one, the pose is a bit vertical, so I would recommend either cropping the sides a bit to emphasize the vertical composition, or perhaps add other vertical elements outside of the figure, such as tall buildings, skinny trees, whatever. Keep it up, you are doing well so far, experiment with making things your own a bit, but there is nothing wrong with doing copies, so long as you are learning from it. Artists have ALWAYS done this. Keep it up!