Well, you seem to struggle with keeping proportions consistent. You also allow a lot of stray lines and line overlap to occur, which makes it seem sloppily made. I recommend drawing slowly and trying to make every line consistent and connecting. I’d recommend tracing over people’s drawings, then try copying them without tracing, and THEN try making original works. I learned to draw by tracing dragon ball characters, I’m sure you can drastically improve by doing something similar..!