Hmmm, maybe add a render and some scan lines? It'll make your sig look nice. I like the background so a nice bluish or that orangey coloured render will make it look great. Or you can change the colour render to one that blends in with the background. 8)
A render is a picture of something without a background...so you can add your own basically. They can be cars, anime characters, abstract...things, or whatever you can think of... Like Peach, she's a render.
The background is great The font style, I don't like...I don't like the big, black stroke, and I think the text may look better a solid color and not a gradient. But maybe not