get the biggest f**king black hoodie, it'll make you look masculine and you'll have your chest mostly hidden
get a pair of socks and use that as a packer if you're conscious about bulges like me
TRACKSUIT BOTTOMS ARE YOUR LIFESAVER IF YOU CAN GET A REALLY MASCULINE PAIR
Wear one of those adidas crossbody bags that roadmen wear
Puffer/bomber jackets are also so good
I'm just a trans man dispensing my wisdom, hope this helps