The font on this last one... not good imo, change it. The bg is very simple and a border would do good as well, I think the sig would look better if it was smaller. You still have to improve the cutting btw, you can see the white spots under Gaara's ears and so.
I think that it would be better that while you aren't good with the background department that you should add more images to your sigs, like 2 more smaller pics of Gaara for example, or his face in the background, you decide just experiment :smile: