I might be wrong, but with your focus being on an anime/cartoon style you have a lot more freedom to push proportions, and you are definitely Improving. this image is also a sketch and not a finished piece. so from an outside point of view when I look at it, its hard to tell what's intentional and what's a mistake without having a deep understanding of the style your using to be able to reference when deciding if the shadows are right or if the nose is in the right place. this means its a good drawing. also any small changes like eye/nose size and position is something you will pick up on as you draw more and isn't something that is fixed by feedback. and all artists at some point get good enough at their desired style, that they can see the mistakes in everything they do and its up to personal judgment to be able to tell when something is finished. maybe the next step is coming up with an original piece that you complete not just a sketch but the full thing. this will give you a better idea of what you need to work on, because you can get good at sketches and still not be able to finish a piece. great work, I hope it helps and even if you don't get the feedback or interactions you were hoping for, have fun and go crazy!!