What I was trying to do

As I walked the streets of London, I stumbled upon this bar somewhere in the city. Oooh, nice bottle display, I thought. Oooh, nice taxi reflection... great for location context, I told myself. So I took a couple shots and moved on. Once home, I noticed the dude in the picture -who I hadn't seen- was staring at me the whole time. Never saw him.

What worked

I guess the accident of the dude smiling.

What I'd do differently

Go into the bar and have a couple. Then continue with the walk.