Methods of Meditation and Astral Projection?

Im fairly new to Meditation and Astral Projection. I have had one short OBE before, and it was life changing. Since then, I have had one lucid dream, and it was also amazing. I try to meditate almost every day, and try to project at night before I go to sleep. I use Binary beats to meditate, and count backwards from 100, then back from 30. It works sometimes, but other times it just seems like its not working. Any suggestions?