sage boots are good, dirty (or camo paint ) the helmet...
and in the first pic the pants seem a different color...perhaps just the lighting.
A few things:
-get some US flags on the vest + uniform
-Avoid black..it does not go well with ACU unless doing a SWAT thing.
-maybe add some other stuff to the OD vest, the stuff out of iraq always looks messy not brand new, but you guys all in all have good looking kits!