Hey dude, always nice to see new faces, as far as your sigs go, they are quite nice, but theres a few things you could work on, i think mainly for me you need to work on filling up some of the blank space/block colour in your backgrounds, liven it up abit with some smudgeing or a background stock, you text is okay mostly, but you need to keep the fonts simple, sometimes a non default font will work really well, but a majority of the time a default one will trump it.

My favourite of the bunch is the samurai one, though i mark it down a little for having a strange border =/ text could be worked on abit too