Hey, this is cute! The design is cute, and you’re doing well with the pose as well. Just a couple of things. One, I’d like you to take some time to clean up your line work and make sure it’s not wobbly. I myself have a little bit of problems with that too, especially when sketching on paper, so I know how that feels, haha! Second, I’d like you to take a look at some tutorials on how to do soft highlighting and shading, especially with clothing and hair. I see you’ve generally got the right idea, but with the shirt and hair it’s kind of all over the place, so a tutorial might help you clear up a bit of the confusion there.
Don’t let this discourage you! If you keep practicing, you’ll get better over time. Feel free to approach my advice at your own pace or ignore it for a while if you’re not comfortable doing that yet. :)