Here's a curious one. Oldest trick in the book, covering up one eye so you don't have to draw both.
Truth is you can see the other eye under those leaves anyway, flaws and all.
I don't think i necessarily draw women's faces any better now that i used too, but i do think i'm more... comfortable with them, even when they come out flawed.
My drawings, i mean.
But then, people's faces in real life are full of flaws too. That's what makes them compelling to try to capture.