Well kid, time really doesn't matter when it comes to any kind of art (accept tattoos).
No need to post a topic just to create a topic. It is somewhat pointless and clutters up the forums. Now, if you were making a topic to a thread of your artwork, then that would be a reason.
I'm not coming down on you or anything. Just helping you make wiser decisions on your topic posting. Don't stop drawing though, I encourage any young person to draw, doodle, sketch as much as possible. Who knows... you may be as good as some of the others on here one day.