I can teach you What I learned if you want

This may sound dumb but I suggest drawing something ( your oc for example) and the same thing every day. And every new time you draw it, try to thing of one thing to improve and try to do it in that days drawing. I did this for about three weeks and my art changed DRASTICALLY. Or you can just practice and use refs and try to draw from the refs :)

This is what I do if it helps