Its ok but...... looks very drybrushed...... It seems as if the destroyer wasnt properly protected in its tomb......I agree with Sherlocko, more colours ( suggest green ), and ditch the orange.
I concur. His hover thingy should probably be a different color. Perhaps slight red or blue shades would embellish the look? The green on the gun is perfect. And he looks perfect as well. Make the cords and little delicate parts look green/blue etc.. and you should have a more life-like mini.