A little too simple. Give it some "umph". Maybe C4Ds or something. It's not bad, but it's a little simple.
Really plain. Lacks depth and flow. The random text under the main text seems really unnecessary and doesn't add much to the tag, imo. Work on blending, effects, depth, and lighting. ^_^
Looks too plain. Work on your smudging, use smaller ones for details if you want to do just a smudge sig. If not add some effects for the flow and create some depth as well.