Looking at your hands have been a great RC for me. It have worked in every DILD I've ever had. Also telling yourself to look at your hands, before going to sleep is a very good "suggestion". It isn't abstract as saying "I want a lucid dream". If you've never had a lucid dream then how would your consciousness, know what it is or even worse: how to have one?

So yes - keep looking at your hands, it is also a good way to stabilize your dreams.