Looong ratings. lol And please inform me if anything doesn't make sense...I really can't type today.
DM
Let's see...I think the second smaller image of the guy should be a bit more faded into the background. Two images of him is sorta...strange. Creative use of that tree image in the background. Not a common choice, but it works. I like that you can still see the pink shirt. The animation is a bit quick, but you've explained that. However, I think one line of text repeating with a slower fad in and out would've looked better. Part of the sig background looks a little too empty, around the words 'was' and 'dm' because there's not that tree detail. (wow, that was long. lol.) 8/10
Pixa
This set makes sense, provided a person knows about desperate housewives. The place where you've placed 'pix' in the sig looks a little strange. It's sort of dull to look at it, especially the av. I think the picture of teri would've gone better. I think the intricate little border you've done looks nice. 5.5/10
Nikita
This is definitely eye catching. The placement is good, and it's a good choice for colorization. I like the font in the sig. The av text looks a little boring though. Might've been cool to use something other than a pixel font. This set would've also probably looked better with a more interesting border. The regular old rectangle is sort of dull, and too sharp against the smooth lines of the image. 7.5/10
WIS
I think the background and text and everything is cool, but it really doesn't go with the image. You cut the two people out a little messily. I can see some jagged edges. The subtext needs to have a different glow around it, as the bright blue looks sort of odd. Honestly, the image and the rest of the set don't really fit together. 7/10
Amethyst
You did a pretty cool job with this. The only think I'd change is to actually make the black, well, blacker, without losing the brightness of any of the other colors. I think it would make them 'pop' a bit more. The sig is a bit long, and I think it's because of how you wanted to place the subtext. The empty left corner doesn't bother me, surprisingly. The white text is a little bright and out of place though. Maybe make it yellow like Ed's hair? 8/10