I'm moving, let alone the subject!
I didn't feel uneasy about taking the shots but I was acutely aware that I had the camera in my hand, albeit at around waist level. I had planned on taking more shots in the car park, but there wasn't anyone around.
I will take the camera - a medium size compact with no zoom - with me on a regular basis. There can be no substitute for experience and that is clearly what I lack at the moment.