Spent about 30 minutes with photoshop the other week and made this signature. The text is never a strong point for me. My downfall!
Get to read some tutorials. This is not too bad but I already said it in another thread. Get used to smudging, download some c4d effect packages and stuff. ^^ It will rescue your signatures. To that one you have there, the render seems overcontrasted, it is too dark, the light source is missing on the left side. The box for the text is not nice and the text itself neither. <.< Sorry to say that haha. Really my first one was worse.