well that's kind of something i have to deal with regardless. there are plenty of idiots out there that think manga can only be made by japanese people. I'm not expecting to get far with this manga, I'm just doing it for fun and see where it goes. But I also don't want to do a shit job with it either.
With your current art level you're not going to be able to change their minds. It's a very bland anime style that one could find thousands of similar style at Comic Market. If you want to show that non-Japanese can make manga then study how Felipe Smith managed to get serialized in Japan.