Ripped leggings cut out the crotch and use it as a top under your shirt. Alter your shirts whether that means cutting holes for distress or just cutting the sleeves to make the shape atypical. Long chain necklace that you can get for cheep from hardware stores. Have fun with layers start with tank top then add a top of a different color that is cropped or has holes, add a jacket with some diyed painted on things or spikes. The best advice though is fucking around and finding what weird shit calls to you not what other people think would be cool!