as much as i hate to be pernickity, what marks of armour are they? if the one on the left is meant to be mark 6, then its post heresy, and has mark 8 legs.
if the one on the right is mark 5, then the kneepads and helmet are wrong.
i think.
otherwise, the paintjob is good, but inking like that just gives a dirty quality. watch the areas you ink and look to the recesses.