If you want your "Pixel Art mark" to stay, perhaps just have one placed on the bottom right. Otherwise I don't see the point in them as it makes the piece rather distracting.

Despite the banding, it looks rather good.

 Lose the K's, there is no point in having them in the piece

Personally, I'd lose the K's and the green BG. I think it ruins a rather nice lightsabre.

Floatingk's is Pixel Art mark. My name is Kevin... Understand?

piece suffers heavily from banding.

also I don't understand the presence of the floating k's