Thinking back on another experience on fitting in or getting noticed was an orientation upon arriving in Italy when I was in the military. The speaker said don't worry, even though this is a big city, the locals will notice you right away and not only know you're not from here but that you are an American. Just by looking at you walking down the street before you even say anything.
I asked how that could be and he said for one it is the way you walk and carry yourself. If you're new here, you're looking at the buildings in a different way than the locals because Italian architecture is different to you. Most Italian men do not wear running shoes or blue jeans or sweat shirts. You want to fit in, dress like the Italian men - slacks, leather shoes, preferably loafers and button up shirt with no button down collar. No polo shirts, T's or hoodies if you want to fit in.
Not long after that - wearing blue jeans, polo shirt and New Balance shoes, ie., not bothering to fit in - I walk down the street and stop at an intersection. A young teenage boy of 12 or 13 asks me, in English, 'Are you an American?' I replied that I was, but how did he think that. He said you just look like they all do on the American movies and TV shows. That after less than an hour in town.