First time I did a hand RC in a dream, it was in front of a mirror. I could see the reflection of my hands, but not my dream body hands.

The second time I did a hand RC, my hands looked normal, but it still made me lucid for some reason.

My hands have never looked strange in dreams, so I prefer the nose pinch RC.

Doing it every time you walk through a door is a great idea. I personally do it whenever I look in a mirror, or see something odd.