Keep in mind that rc's are hit-or-miss. You can look down and see a perfectly normal hand, think you're not dreaming, then plug your nose and breathe easily. That's why it's good to think of it as a reality survey, trying a series of checks. The real question is "Is this a dream world or the waking world?", not "Are my hands normal?"

I've had good, consistent luck lately by trying to press the index finger of one hand through the palm of the other hand. It works well; every time I've tried it in a dream, I've gone right through the palm, and it cracks me up. Also, it works sometimes even when I can't see my hands in the dream. Lying in bed in the dark, you can try it as well, even though you can't see your hands.

Do you understand the difference between personal dreamsigns and rc's?