Timeshift.

Comments/criticism appreciated.
http://img237.imageshack.us/img237/6454/cbac.png

The background is too plain and the focal point is over-sharpened.

interesting sig,kinda the render is too sharpened

I agree with Jool.
I reccomend you to follow some tuts. You'll learn how to make nice effects and how to blend your render etc.
Also the text needs work.
Keep at it ;)

Its too plain tbh