Uber lecture mode!
To start off, never EVER use two renders. That means there are two focals, and it is really hard to focus. Also, it usually looks bad. :s
Second, don't emboss or add an outer glow to it unless you think it really needs it (for example, made-from-scratch rock or some shine)
Third, your text... don't make it stand out like that. Try to stick to one theme for your signature. Since the majority of your signature is blue, try to make it a type of blue that will show, but not stand out like "a businessman in a crowd of hobos".
Lastly, your background. That combination of colors is the color of vomit. Don't choose colors that don't go together. Again with sticking to one theme - if it's blue, make it stay blue and not yellow green and red.
Uber lecture mode off.