Nice! Very clean (the paintjob, not the ork). I like it a lot.
Can I ask how you painted the skin? I'm struggling to work out how to paint mine...
I start by mixing some Knarlog Green with Mordian Blue to get a very dark Green almost Blue undercoat.
I then use a wash of Thraka green.
I dry Brush with Goblin green
Then i mix goblin Green with Sunburst Yellow and dry brush again but only adding to the highest areas.
Then ass above but i add a little white as well.
i never measure the mix of colour infact i try to do it a little diffrent every time so there skin is allways a slightly differnt shade.