I wonder if there's something about shooting from inside that closed the whole scene down to just the frame passing by. When I'm photographing something I can walk around or step back from, I second-guess every angle. But through a train window you get what you get, and that constraint sounds freeing in a way I probably need.

I've never drawn from a moving train but I keep meaning to. The gesture changes every second and you can't go back to fix it, which is exactly the problem I need. Do you work from those later or just let them be what they were in that window?