Okay this seemed to be helpful before, so basically to become proficient at realizing you are dreaming you should learn to ask yourself if you are dreaming 21 times a day. Here are someways to remind yourself to do it.

-Put "Are you dreaming?" in your cellphone banner.
-Homepage wallpaper/ sticky note
-Wallpaper
-Ringtones of dream related songs
-Written in school notebooks
-Written on hand