Second the text, but I like the effects. The lighting right behind the render sort of takes away from it. When I look at the sig, I tend to focus more on that than anything else.
Yeah I know the lighting is a bit weird but I can't find another focal. without the white it seems really lacking of lighting.
For the most part, it all looks good. I'm actually not a fan of the lighting, but there isn't really anything WRONG with it, so I won't judge based on that. Text isn't very good, and even worse, it's cut off. Even if that's what you were going for, it just doesn't work well that way. My rating: 8/10
I like either the 1st or 3rd version. Great colors. I think you could improve the depth, and I'm not sure how I feel about the light source. Seems a bit strong.
I suggest adding text on that arm, right where there's gray and orange . And to reduce that focal point, try adding a black bar right in the middle, might seem strange but it will probably add something special . <3