I would clean up brows in a salon. Nothing crazy (clean stray outsiders and between, more if you're comfortable) and as far as I know there is no military regulations about brows.
Some makeup - beard cover if you need it, foundation, little powder to set in, mascara, lipstick. You can get foundation from Sephora or any other place having a cosmetician, even if you aren't dressed up.
I personally would prefer nice skirt (little to no butt, tucking - skirt hides it all and I just love skirts) and 2" heels (makes me move differently -> more femininely), but if you want leggings and sneakers - it's a free country and personal preference.
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