I love how lively your artwork looks. It suits Komari a lot.
As Takafumi said, though, you may want to practice more on the anatomy. There are a couple of ways to get a good grasp of anatomy in drawing. One is to use blocks:
I personally don’t like how the breasts are drawn in the one I linked here, but I think it’s a good start. It’s much easier to imagine the body as a combination of the most basic shapes than going with the details straight away.
Another is to get a model. You can ask a friend or a sibling to pose for you. You can also, like, get a mirror and pose (I do this a lot, especially with hands haha). Observe the details and how they relate to each other. You can also look for poses online and base your artworks on them.~
Another thing to practice is lighting. This is a little harder and requires imagining the character as a 3D figure to find out which side the light hits and shadows form.
In any case, practice makes perfect. ;D