it's something you learn by doing! i also started drawing as a little kid so i'm not sure i have the best advice to offer.
as for resources... i actually watch a lot of naoki saito's channel because i really like his series where he corrects fan-submitted illustrations. (there's english cc for all his videos but it's machine translated, so i think it can be confusing at times if you don't know any japanese... sorry)
watching him draw over a more inexperienced artist's work and strengthen the points its trying to commmunicate feels very refreshing to me, because i'm so used to corrections/critique being like "the anatomy is bad, so fix it"... instead, he gives very clear and actionable suggestions and explains the thought process behind all the things he's doing to improve the artwork. watching those vids helps me remember that drawing for its own sake is fun, and makes me want to draw more. also i feel like my art got a little better after watching him just because i was like "DAMN this guy really goes nuts with the transform tool!! i should do that more often!!!!"
anyway, a piece of advice for complete beginners looking to draw anime or whatever--i thought this recent vid was especially good because it teaches the concept of "deformation" aka taking something from real life and stylizing it to your tastes (in this example, just an eye). it really helps explain why anime looks like that, which in turn helps you draw it better. i just appreciate so much that naoki saito can put things like this into words and give new artists a step up... idk all his vids are really encouraging, and i think that's the right attitude to have when you're going into drawing.
tl;dr just draw and have fun. improve at your own pace :)





