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just drawing in general.
Showed an art mod a few sketches from a few years ago and he said they were p decent tho I still dunno, but I wanna get better now so I can draw them again :) but haven't drawn in a while and suck now
well I can't give you much advice. If you want to get better... just draw XD. Draw everything, even if it's bad, just keep drawing. That's how you get better. Just remember, no one is born with artistic talent, they all started drawing sucky things and improved over a long time.