I hate to be crude, but this can't even be called a sig. There is no focal whatsoever, nothin to catch my eye. It's just lines. If I were you I would pretty that up, make the lines a different color (earthy colors) on black background. Than you could add a nice render in their and call it a sig. Heres an example of a sig:
The background is an enhanced urban environment. In the middle you have the render, in this case the woman. I played around with it, adding and removing content until i was satisfied with the background. I blurred it, and pasted the render. Than I did more advanced tricks to make the lines wrap around her and add depth. No, this is not the best of sigs. However it's a good example of a basic sig.