they're all very well done for a photoshop newbie... i favor the metroid one, but i think that the background color could be a little different so she doesnt blend in so much... also, the text could be in a different, more effective font...

I think that the first sig could use more contrast. The image and the text are a little difficult to make out at first sight. The third one is not blended well enough, in my opinion. It looks like three disparate elements rather than one unified image.

The Samus sig is your best, though I have to agree with Macace8, the noise around the text looks out of place. I'm going to guess that the noise around your handle was intentional, but that the slight noise around Samus was unintentional. Maybe you had some trouble extracting the image from its background? That part gets easier as you develop your Photoshop skills, so no worries.

These was really grat. I liked the 3rd best, the first wasn't so good, but if you never have used photoshop before, they are all very good.

The backgrounds are really good but it looks like you just put the picture flat on the background. You should try and make the picture and the background like link or blend into each other to make it look more like one picture.

Thanks for the feedback, i'll keep on going make new siggs, i'm really not good enough at it, and, NO, i didn't use any plugins ore something....., but there are much people, that make very better siggs than mine....