You're always going to get washed out details on the Storm Commando, the whole black on black thing does take it's toll.
But then you are supposed to hide into the shadows!
I found using a satin paint job for the main armour and gloss detailing with the pin stripes, snout and decals helped a little bit. Not a huge amount, and they are still difficult to see unless you look closely, but it gave a little bit of a contrast.
Same goes for the bund/pouches. Try to use a different material between the two, one with a heavier weave or different surface texture. This will help create contrast and depth to your costume.
And for the suit and boots... The changes between the suede and cotton on the flight suit, the elastic straps, and the vinyl on the boots all add in these tiny details which stop the costume being a two dimensional black void.
It's all very subtle on the Commando, but that subtlety can really make or break it.
They are without doubt the meanest trooper around.
It's funny, when out, even with BlackHole troopers, I get the "look, shiny black stormtroopers!... but I don't like that one... he looks evil!" (win!).