Looks like u just did a render>clouds then put some frectal brushing. i would add more contrast to make it more interesting, and make the brushes stand out more, dont be afraid to make the text horizontal, it usually looks better that way. the left side of the render is blended well. but i would have de-saturated it so you dont get that GLARING green eye in all that nice orange. also i dont think a render like ratchet and clank would go well with grunge, try it with some abstract brushes