This is a really nice piece, you have a very clean style, and yes, tellow is a bugger to paint! The purity seals look a bit lost against the yellow armour though, as bleached bone has certain yellowishness to it.I would suggest picking these out in kommando khaki or skull white in future. I especially like the metallics (NMM?) and your attention to detail like the roman numerals
Great job on this mini. I agree on the yellow. I also have one suggestion for you, which was also suggested to me some time ago. The weathering on the shield looks like it is painted on. To give it some depth, check out the "painting freehand notches" article on the painting section of this website. You could also check out the "sctratches" tutorial on fellow cmon'er Kaple's website. other than that great job man. Nice highlighting on your grays.