Earth- Grasshopper WIP

Helixx

Hey guys, second work I post here but this one is a work in progress. I've hit somewhat of a texturer's block... I've finished the model, the normal/bump and all that's left to do is texture it but I just can't seem to get it right. I really like the way the head/skull turned out and was wondering what you all thought and if you could suggest anything. Thanks in advance.

Slash

If i remember correctly this concept was done for a COW contest over at conceptart.org, why dont you look at the reference for some texturing ideas?