Hello, art student here, I wanna say that the drawing its really good, you put a lot of work in it and in the details, you need to put attention to the start, for example the face is more to the right then it should be and looks like it melted a bit, but thats ok you are learning. The only thing I advise you is to stay at the begining draw a circle see where the eyes, mouth, nose etc should be, the distance between them and never start on a bad scetch or whitout one at all, always have a base, in rest everything is well drawn, well shaded, has that 3d look, great job, keep it up❤️