My writing, while not the best, had improved drastically since I started on this site. As a matter of fact, comparing my first piece (don't you dare read it) and my current writing, my current writing is leagues ahead from what I used to write. I can now make plots that make sense if you turn your head a certain way and my characters actually have a personality, just a small amount.
But I know I'm not perfect. I absolutely stink at describing character's appearances and setting, and as mentioned above, my characters aren't the perfect picture of person with a personality. Still I hope my writing improves even more in the future.