Here's my Chapter Master, all dressed up and ready to kick ass while looking sassy. Why does he have two thunder hammers? Because it's rules legal and I've got a hardon for big-ass hammers, that's why. I don't care if he costs upwards of 200 points and always strikes last: It'll hurt like buggery when he finally gets a chance to hit you back.
I thought of maybe giving him a horsehair crest or some wings on the helmet, but I think his huge cape is enough to signify that he's in charge here.
He originally had a green cape but I thought it didn't quite fit with the chapter's fluff, being from a desert planet, and so I went for a more sandy coloured cloth look. I think it worked out pretty well. Still not sure if I want to put a gold border over the very bottom of the cape though, just for some extra shiny detail.