I really, REALLY like your `jack shield metalics, man. You make them look all iron and worn down, I don't know if it's intentional or just the way your paint dries, but it really doesn't matter, the metal on you Cygnar shields looks awesome. I agree with the previous poster, I do like the alternation of the color, and it would be great to see continued above.
I think I mentioned this on a previous post, but where your jacks have big bolts on them, the shoulder edge and "neck" regions, that really looks funny to me in standard blue, I don't know what it is, that screams "metal" to me. And also, you'd get a lot more depth out of your blues with a watered-down blue ink wash.
I like your color scheme. You alternated the pattern on the legs, and I like that, too, but if you're going to do that, you should continue the theme above the waist as well.