Let me tell you, you've mastered a bunch of things starting out that some people at my age don't even grasp. Your attention to detail and how everything looks balanced on her (no leg bigger than the other) really show your dedication. Also love the background and the faded extras around it. I can tell you're dedicated, and that's very good. Don't stop. If you plan on studying art, first thing I'd recommend is you take an Anatomy class. Once I took anatomy I understood so many things about drawing humans, and why certain things look out of place even when I erase and redraw a lot. That's all I'd say you have to look out for: proportions and their placement.
Keep it up, tho!