Not bad, but it looks too stretched. Try and have it fill up the whole screen along with adding some visual effects.
Pretty good! XD I would remove the gray-ish color that makes it square, just use the oval. Also, I would brighten the image abit, as well.
Wow, that is pretty freaken incredible. If I could, then I would use teh sig mehself ^_^ N I dun think it is all that stretched really. I think that by stretching it, it has been improved
Personally i think it's great but the gray box around it i think should really go make it be just the oval and i think it will look a lot better.