6.5/10
I think you were aiming for simplicity here. I'm not sure if it's the kind of simplicity that suits a signature at the moment...or a user title (what you put in the space that usually says "Beginning Trainer"). Therefore, I think you could do much more to make it look less like a misplaced user title. For example, besides adding a little more text (if you would like to), you can add some formatting to your text such as color and font, a small image like a .gif that may be relevant to the quotes in your sig or to your avatar, your favorite symbols (like a ★, → or » maybe), or even all of those if it works for you. So yeah, I think you should take advantage of the formatting options a signature has that user titles don't have. :)
But, if you really love simplicity, then don't worry, I think your signature is fine. I find the phrase cute, even. And I like your username and avatar, too. :3