I saw this guy at Wondercon and wanted to draw him because he had an interesting nose. I really should draw him again because I didn't get the nose quite right. There were so many people with interesting faces that I wanted to take pictures of, but I kept missing the opportunity. Plus, half of those people weren't in costume so it would've been weird if I took their picture. "Just keep walking, Timmy." "Mommy, that lady is weird."
I never have my camera ready when I see a photo op. Then when I do have my cameraphone out, I see nothing photo-worthy. It just makes my battery die.