I think I remember you actually.

I like the style, but they all seem a bit empty to me, especially the first one.

Your Avril sig's great, although again, it seems a bit empty, but it's by far the best of the three. Text in it looks good and fits, and I think you chose a right combination of brushes in it. I have the same ones myself. Work on the left side a touch and I think it'd be a kick ass sig.