>>100Your clothes are too… shiny. I don't quite know how to put it. It looks really fabric-y.
If I were you, I would get a somewhat dark khaki jacket, cut the sleeves, and roll the ends up.
Wear that over a dark red sleeveless shirt, tuck the shirt into your pants, but keep the jacket out.
Lastly, wear the jacket loose enough to flap in the wind, but tight enough to cover the shirt, only pinned together by one or two buttons a little bit above the center.
Pic somewhat related, it's lol's official art "Onii-san". Smile is wearing a shirt underneath that jacket.