To be honest i just drew a ton until i got better. I'm sure there's more advice i can give but i can't think of it right now. But that's the main thing is putting in the constant practice.

Patience..
something i do not have

I think your style's pretty cute as is! But I'd start with identifying what you'd like to improve on, and looking at resources that can help you develop those techniques.

It helps to draw a lot, but you need to endeavor to put in the work to get better at it and always strive to improve (but remember to always have fun with it!)