I know this may sound funny since you said it to me, but your sigs are getting repetitive. They all feel oversharpened and overshaded, although it's hard to notice, but I have a pretty close eyes for mistakes. Try out some different techniques for your signatures, like using some blur or smudge tricks. Maybe that will make your sigs better, and 7/10 for your recent signature. I know it's not shaded, but it's sharpened.
EDIT: The adorkable signature looks better with the lighter shading, a neat 9/10 for that.