I started seriously drawing about three years ago. But I always have drawn, so whatever. I'm concentrating on moving forward now, and that's all that matters!
I've been drawing since I could pick up a pencil, but I wish I had started taking it seriously around the year I started highschool. So much free time back then Now I can't put any time into it because of college ¬¬
I've been drawing since I was at least 3 or 4. Perhaps because of this, I am largely self-taught.
I most certainly wish I had started drawing humans at around 8 or 9, because 18-year-old me can currently draw a human at approximately the level 10-year-old me could draw a dragon. (Which is to say, very bad)