oml...
well, abt the getting better at drawing thing:
well, everyone has their own style, and everyone is unique
you could watch YT videos, draw from references or from books
i like to draw charecters that i've made and some that already exist.
i find drawing from your mind is pretty tricky, if you look up a pose, like lets say sitting down, holding an ice cream. i would draw that pose, then a charecter into that pose.
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hope that helped!!!