Thanks for your comment. The photo would certainly have been interesting if there were no pedestrians, but it would probably have been a bit rude to tell them to walk elsewhere! To be honest, I don't really fixate on awkward footsteps. I just had a feeling that I'd taken a few such photos and then spent ages trying to see if I had any. I mean, I do think about what people's footsteps look like when I take photos, but the idea about making a series of such photos occurred to me only recently. So yeah, it's a bit different from taking selfies!