/ic/ - Artwork/Critique

I asked this question in the last thread but nobody answered me. At what point should you start working on projects or actual art pieces? Should you wait until you're fully satisfied in your skill and feel like you've mastered most things, or should you draw actual serious drawings and such inbetween studies. There's a million things I want to draw, and eventually I want to start a comic once I get a better income and can support my passion better (once I get a real job basically), but I'm afraid of drawing polished turds. Pic related is some sketches I drew

Also does anybody have and tutorials or tips on how to draw women? I mostly draw men and try to keep my style pretty angular so I have no idea how to make an attractive woman in my style