I know for sure my hands are my hands. They look thinner. It’s always dark when I see them though. I mainly use focusing on my hands to stay lucid.
But since the question was asked and I’ve thought more on it. I don’t see the specifics to my hands (i.e. fingernails). I know they’re mine and I know how they feel but I usually don’t stand there long enough to look for other things on them.