You might want to change "Don't **** with me" for "Don't mess with me" or something of sort. And that sentence makes no sense with that picture, it would suit better the girl with the guns, that furry thing looks too inocent. The sigs look Ok.
That first sig, whether your intent or not - does manage to circumvent the swear filter we've got in place. If possible could you either clean it up - 'Don't mess with me' does have a nice ring to it - or remove it having gotten criticism for it.
Sorry, but rules be rules..
As for the sigs.. I actually likes the solid look. I know blending is the fashion but there's something to be said for hard pictures. My favourite has to be the bottom one, the small patches of blue on the woman work really well with the background.