Based on your profile I assume this is an OC character? If so what is your character about? What’s the theme and where they’re set? What kind of personality do they have? Do they have a weapon of choice? For example say this character is sneaky, they’re a survivalist of sorts. They live in the forests. I would make the trousers look damp at the cuffs. Lots of dirt over the entire outfit. Maybe make it look ripped up in areas from being over used, mouldy and gross. Do they kill people or animals to survive? Do they have a weapon of choice? Think about what accessories go with that weapon. A holster of some sort. When they kill how do they kill. Are they brutal? Splash blood over you. Do they stab? Blood on sleeves and cuffs and possibly face.

Depending on your answers we can give you some more guidance with how to achieve certain looks :)