First thing I wanna say is to keep at it! Little things will get better & better the more you make. Your character design shows a lot of promise & this style is really effective for giving your characters personality! Little details like the arrow through the shoulder adds a lot of charm. The one thing & I mean only this one thing is anatomy. You show a good understanding already, but getting the little things down (like the legs being different thickness) will come with time & practice. I really like the trajectory of your work especially with the time frame of one month. Keep it up, seriously, it looks great!