You don't make things look REALLY good with 3 ways of cropping...
I use a third party program plugin for photoshop which blends in the areas I want to keep from the areas I delete, magic wand itself works to an extent, I use 32 as my default tolerance, I then use the blur tool with a small soft brush and go around some pixel areas to give a anti-aliased feel, make sure you do it on a solid coloured blackground, I use 50% gray, because what you see with a transparent background compared to a solid background varies greatly.
Anyhow the sig is very simple, but the colour just doesn't have the 'feel' compared to your tori, I suggest that you 'atleast' use some sort of gradient instead a solid colour, Gradient > Solid colours.