What font is used for the word "RagnaroK", or is it an image (looks like an image)?
I don't like the sig at all though, the colours, the render, the size.
Just try something simple and small at first (I usually use around 325/350 x 125 pixels), and just mess around.
My advice is to just make sigs without images at first to just get the hang of things, then move onto blending and what not.