Your detail is good, but nobody stands like that. Take a look at these sprites for comparison

try to make your standing poses look more natural, and if it's going into a video game make sure like they look like they're ready for a fight. Unless that's just supposed to be an idle suit of armor or something, in which case ignore this. Also as you can see here, using bright/contrasting colors is always a good idea with character sprites. If your sprites are too dull they might actually blend into the background thus making gameplay frustrating.
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