1. Good color, but it's a splatter of texture brushes, with no balance or organized layout. 4/10
2. Also a good color, but it's hard to tell what's actually going on. 3/10
3. This is a sig that had great potential, but the BG texture has plain spots which really kill the balance. The image is also too blurred for the color and the brightness of the sig. 4/10
4. First of all... the BG is way too dark, and doesn't work with the suddenly bright image on the right. Secondly, I'm not really feeling the color blending of the image, but it could just be the fact that the BG makes it look awkward. 2/10
5. Hmm, good color, but as I stated in 1 and 3... there is no BG texture layout or balance. It looks like an artist took black paint and just flung it a legitimate BG, that is hiding behind it. The image is cool, but is surely disrespected in this sig. 3/10
Seeing that your new to the forums, I'd like to finish my post with saying that I am in no way criticizing you as a person, or as a sig artist. I am simply stating how I feel about your work, basically giving you tips on how to improve. I know you made it apparent that you made these sig while you were bored, so don't think that I am judging the limits of your abilities on what you have presented in this thread. Please take any further critcizm from any other member of this forum in the same regard, and PM me or another mod if you feel your being insulted or flamed. We will handle it, and ensure that your thread stay open if you follow this guideline.
Here's the Forum AUP...
http://forum.esforces.com/announcement.php?f=2
...if you any further questions.
Thank you, and welcome to the forums. :]