Another thing that i like to do besides RC, that seems not to be too common, is naming places. No matter where you are in a dream, lucid or not, theres always a setting. So when you wakeup, describe the place in your journal. After having many many dreams recorded, ive noticed that there are specific places that i dream at often. One of mine, for example, is a junkyard type setting. Its always at night. Knowing this now, i decided to name the place. I call it Limbo. And whenever i see this place, it dawns on me im dreaming.

Its almost as fail proof as reality checks while dreaming, for me anyway. Just thought ide share, good luck to you!