Hm honestly idk??

i'm not quite sure... but i haven't seen you very often shading- and maybe on that thing, but i think your artstyle is very nice and overall i don't rlly think there's anything wrong with ur art, but i think maybe you could practice other art styles as well, like realistic-ikthatsoundsbad- but bc i think it's better to have more experiece and learn those kinds of things as well- idk tbh, but only do it if you want tho 'cuz i'm pretty fine the way u draw, it's nice, cartoony, u've got also a good idea on which colors to pick when doing a pallete for a drawing and i think u pretty much don't need to fix anything but i can recommend you to practice some shading and experiment with other art styles