This sig isn't that bad and could have potential but you messed up on some things. The first thing is the renders, which is very blurry. Always try and get the best quality render. If you can't find a good quality render for the thing your looking for... simply don't use one. There render looks like you didn't resize it properly which probably gave it that bad quality look. When resizing an image, always hold shift and move the diagonal bars. Always try your best to blend the render into the background. Read some tutorials and you'll get better.
