I highly recommend developing the ability to draw anatomy accurately! It’s a useful skill to have, especially if you plan on pursuing art in the future- so it’s best to develop it early! Once you understand anatomy, you’ll find the ability to draw much easier and you will become more confident in turn.
A few years ago I would spend afternoons after school in the public library, drawing animal bones from books and studying human anatomy. Books are an incredibly useful resource, don’t take for granted those bundles of knowledge.
Another thing I’d recommend is gesture drawing- human and animal. It’s an easy way to get out of a rut and you will gain a bit of knowledge if you do it frequently enough. Pixielovely has a good free online tool for this, it’s great to do when you’re feeling rusty.
Lastly I tell you not to worry about style so much. Take the time to learn the rules before you give yourself the liberty to break them!
When you study and practice, you’ll find out what you like to draw and exaggerate. Style will come naturally to you in time.