Capture - 7.5/10 The borders are too thick for my liking.
bl4xb0x - 8/10 I like it, and it fits Yuki pretty well. Though the middle part seems a bit plain. (Empty space)
KeiKei-chan - 8/10, though the text is a bit too small.
Cats - 9/10 simple, yet effective
Pelly - 8.5/10 Cute
All credit for my sig goes to K. Yamato >.<