In my opinion it seems overly big and the render is pretty choppy; don't really care for the text either.
really sharp, the render looks kinda jagged try blending. the sig in general needs a lot of work read the tuts here on the site and you should get better fast.
Find a render of better quality, get some new fonts, and add some effects. It looks like all you did was add the background, add the render, and add the text. Try to blend the render into the background and the non-existent effects. I would also recommend you download some fonts off of dafont.com unless you already have
