You're using that vector style quite a bit. Um.. mind doing something else? Its not bad, but you are using it too much and are missing a lot of simple things like blending and placement.
On the last tag (Reimu), I dont really see what you were doing overall. Why are you using blue? There's no blue in the stock image so why are you using it? Why are you using that hard to read Old English style text? Why isnt the stock image more integrated into the signature? (Also, your link to the tutorial is broken, link to the thread)
I would suggest dipping into other styles, such as C4Ds or smudging. Each of those requires you develop senses of blending and focus, which you seem to be lacking on.