yes the bg is really plain, get rid of that red around the text looks bad it kills the sig. to put a border a sig with photoshop is make a new layer go hit ctrl+A, and then go to edit-stroke 2px white then go to back to edit-stroke and put a 1px black border there you go.
Add way more to the background. The stroke is ugly, never do that. The render placement is pretty good, but maybe move it over to the right a little bit. 400x100!