DUde, I hate to say this but I really like it. I'm not a fan of the border, but thats just my choice. I think the only you could've done differently is get a different text, and maybe make it blend in with a banner a bit more. Other than the text, thats a great job.
Lol Alex you just can't stick two characters in a sig and expect it to look good. You have lighting all over the neko's face which looks kinda weird. I say set the opacity on her so that she's disappearing into teh bg. For your first one....I find it decent but ya gotta work on ya skills to get better k.