@Ventana: better, though the render looks way too grainy compared to the background. Also, I'd prefer the cross not breaking out of the border, but being inside it, without the shadow.
@Seth: simple composition is good, but as Yue pointed out, you should watch out for your colours; they should always match each other or create a smooth contrast - for starters, it's easier to make either warm-themed or cool-themed sigs.
Downsize the sig, downsize the font, make it a tad less centered, adjust the colours of Mr Craig's face, so it seems as if he's affected by the explosion behind him - a warm, red/orange-filter about his face layer should the trick. You can also play with burn/dodge to get the shadows/brightness right.