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Very nice, Very nice! the only thing i would say is that the metal on his helmet looks a bit chunky so you might have to water it down a bit to make it smooth.
On my friends GK's i used an enchanted blue wash and repainted bolt gun to get a magical feel around them. Might want to try it out.
The paint looks a little thick in places, mainly on the houlder pad and helmet. As said, a bit more watering down would sort that just fine. =) Overall it looks good, but culd do with a little wash or something - either black or blue (try the new GW washes) to add that bit of depth to the armour.
A few things. I think the Emperors champion conversion is a nice idea, but it really needs the arm lifting up slightly. pointing further up would make it a more heroic pose.
You can not leave those blades painted black, Id like to see some wonderful layering effects or somthing on there.
Wow! I have let this project slip!
Anyway, I have made some good progress on these guys. There are a total of 18 PAGK I'm working on, 6 are complete except bases, and others are ranging from basecoat and first metallic layer, to just needing some finishing detail work.
These are very cool models - I can't believe that I have let it go this long!