Robot: Aww, what can I say? Your sets are great, and this is no exception. I love the set, the composition, and the way the heart adds a splash of color. The fonts are nice too. In the sig, I might move the girl over a bit to the right to get rid of some of the empty space and prevent the overlap with the text. Also, for some reason, I think the thought bubble might look better without the scanlines in it... but that's me being weird and nitpicky.
Ridduklus: I like it! The cutouts are cute, the background is nice (although the little bit of green next to 'got' is sort of distracting), the text and image are nicely blended in. In the av, I'd move the text a little to the left, away from the border - just about a pixel or so. Tnhe sig is a little too tall for my taste, and you end up with empty space at the top. Since the sig subtext overlaps with the guy anyhow, I'd just move the main text down a bit and put the subtext at the top.
Amethyst: Well, I still think the butterfly sig was fabulous, but this is nice too. You did a really impressive job of changing the whole feel of the image from day to night, and it looks quite natural. The main text is a little too bright, and dominates the image. I love the subtext quote, by the way.
xerai: I could tell it was a horse, but it took me a little work.
It might work better if you lightened the scanlines a bit. I'd also move the text about one pixel to the left. I like the squares and the fading line at the bottom.
Mary: Nicely done - I like the feel of the whole iamge, and it looks quite smooth. For some reason, the text over the third person from the left looks a little odd. Also, since there's a lot more writing on the left than the right, the image looks somewhat unbalanced. Maybe you could have done the main text as only two lines, spread it out more, and put her name across the bottom?
Yoshi: I love it. It's quite inspiring - I actually can sort of feel the autumn air and the warmth of the tea when I look at it. I might take away the characters at the left, though, as without it the set is more simple and...literal, I guess, but it looks fine that way too.
Ratings?