This is a tip that I picked up after reading both the Russian mystic Ouspensky and the book 'Hypnagogia' by Andreas Mavromatis.
Eventually the hypnagogic images will form into complex patterns. After viewing this for awhile these patterns will become more complex and form short story lines or 'sketches'. The final form of the short sketches will be (once asleep) a full length dream complete with visual images, a coherent plot (usually) and other sensations such as sound and feeling.
Allow the images to become more complex. This involves passive viewing which is to watch the images as you would watch tv. If this is done on a regular basis you will soon find that you have drifted either into light trance or directly into sleep while watching the hypnagogic images.[
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Eventually the hypnagogic images will form into complex patterns. After viewing this for awhile these patterns will become more complex and form short story lines or 'sketches'. The final form of the short sketches will be (once asleep) a full length dream complete with visual images, a coherent plot (usually) and other sensations such as sound and feeling.
Allow the images to become more complex. This involves passive viewing which is to watch the images as you would watch tv. If this is done on a regular basis you will soon find that you have drifted either into light trance or directly into sleep while watching the hypnagogic images.[

