Love yourself and have a passion for your subject. Nothing else matters unless you are intending knocking out material for the auction rooms. That's a whole different ballgame that involves loving yourself, having a passion for your subject and having a very good agent.
If you are serious about wanting to improve your drawing skills then a class which will teach you how to use measuring, (the old pencil in the air trick etc), working out angles and perspective will help you. And of course, lots of practise. And you can go on loving yourself and your free expression as well, naturally!